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Zack Polanski

Zack Polanski (born David Paulden; 1982) is a British politician serving as Leader of the of since September 2025 and as a member of the London Assembly for the Londonwide constituency since 2021. Born in to a Jewish family, he changed his name at age 18 and identifies as and vegan; prior to politics, he worked as an , hypnotherapist, and , including a 2013 incident where he was recorded offering a hypnosis session purportedly to enlarge breasts to a journalist as a one-off journalistic stunt without charge, for which he later apologized. Polanski joined the in 2017 after unsuccessful runs as a Liberal Democrat candidate, becoming deputy leader in 2022 following his initial election, and securing re-election in 2024 while chairing London's Environment Committee to address issues like and . He won the party leadership decisively with over 20,000 votes against a joint ticket of sitting co-leaders, campaigning on "eco-populism" that prioritizes mass mobilization against economic rigging by elites, including proposals for wealth taxes on billionaires, , renationalization of water utilities, and aggressive green energy transitions to lower bills. As leader, he has positioned the Greens as a left-wing alternative to , announcing defections of Labour councillors and advocating via , while critiquing policies on migration, policing, and foreign affairs like . His approach emphasizes direct communication and energy, drawing comparisons to populist figures but focused on environmental and causes.

Early Life and Background

Birth, Family, and Name Change

Zack Polanski was born David Paulden on 2 November 1982 in , , . He was raised in a whose ancestors had emigrated to from via and , facing persistent that prompted his forebears to anglicize their surname from Polanski to Paulden upon arrival in the UK. Limited public information exists regarding his immediate , though he has referenced a stepfather named and an abusive family member sharing that name, which influenced aspects of his personal identity. Upon turning 18, Polanski legally changed his name from David Paulden to Zack Polanski, reverting the surname to his family's original Polish-Jewish form to reclaim and express pride in his heritage, which had been obscured by prior name alterations amid historical . He selected the first name Zack partly to distinguish himself from his stepfather and avoid associations with the aforementioned abusive relative, both named . This change underscored his embrace of , positioning him as the first Jewish leader of the of upon his later election.

Education and Upbringing

Polanski was born David Paulden in 1982 to a Jewish family of Latvian origin that had fled pogroms in the early , anglicizing their surname upon arrival in the to evade . He grew up in , , as the middle child of five siblings from parents who separated early in his life, within a traditional Jewish cultural milieu amid the socioeconomic challenges of in the 1980s and 1990s. His early education included attendance at a Jewish in , followed by King David School, before transitioning to , a fee-paying independent institution, on a . Polanski later described disliking the environment at Grammar, from which he was expelled, prompting a move to Cheadle and Marple (also known as Ridge Danyers College) for A-levels from 1997 to 1999. He pursued higher education in drama at (Prifysgol Aberystwyth) in from 2003 to 2005, focusing on acting without completing a specified degree. This period marked his initial formal engagement with performance arts, though subsequent training occurred abroad at a drama school in Atlanta, Georgia, .

Pre-Political Career

Acting and Entertainment

Zack Polanski pursued following his education in drama, including studies at the , , and graduation from a in , . Early in his career, he performed in regular theatre productions at the Unity Theatre in and starred in several short films there before relocating to to advance his pursuits. In film, Polanski appeared in Art of Suicide (2007), Seven Crosses (2008), and Bashment (2011), roles that marked his entry into screen during the late 2000s. These credits involved minor parts in productions, reflecting the challenges of breaking into competitive sectors where public skills, such as and , develop through iterative on-set and experiences. Polanski later engaged in theatre, working with the immersive company DifferencENGINE on productions emphasizing . His focus shifted toward community-oriented , including "Theatre of the Oppressed" methods aimed at amplifying marginalized voices through participatory performances. This phase honed transferable abilities in and narrative delivery, grounded in the practical demands of live audience interaction, before transitioning to other professional endeavors around the early .

Hypnotherapy and Alternative Practices

Polanski worked as a cognitive in during the early 2010s, operating from the Lewis Clinic on and offering sessions for issues including phobias, , and purported physical changes. He promoted as leveraging the mind-body connection to influence outcomes like hair and nail growth, alongside more conventional therapeutic goals. These claims extended to controversial applications, such as using to enlarge women's breasts, which he suggested could occur through subconscious reprogramming of bodily responses. In a 2013 undercover report by , Polanski offered a female journalist a session priced at £222 to attempt via , asserting potential physical effects despite acknowledging variability in results. No verified client testimonials or controlled outcomes supported these specific interventions; the practice relied on anecdotal assertions rather than empirical measurement. Polanski trained in cognitive hypnotherapy methods, later co-training others in the field, but no formal regulatory certification details, such as from bodies like the General Hypnotherapy Register, are publicly documented for his practice. Hypnotherapy for structural changes like breast size lacks substantiation in peer-reviewed , as is primarily governed by hormonal, genetic, and nutritional factors unresponsive to hypnotic alone. Controlled studies on show limited efficacy for subjective states like pain or anxiety but no causal mechanism for objective physiological alterations beyond effects. Polanski ceased practice prior to his full entry into around 2016–2017, shifting focus to and counseling amid financial needs from parallel work, without reported complaints to regulatory bodies or ethical inquiries at the time. In September 2025, following renewed scrutiny, he apologized for the breast enlargement claims, stating he no longer endorses such applications and views them as misguided.

Other Professional Ventures

Polanski engaged in youth work, supporting marginalized communities through community-based initiatives, as part of his pre-political professional activities. He also served as a counsellor, providing support outside his practice, contributing to his broader experience in counselling roles. Additionally, he held various positions in the sector, which aligned with his overall background in the characterized by short-term, flexible employment. These ventures preceded his formal entry into in 2017 and demonstrated his involvement in service-oriented and community-focused occupations.

Entry into Politics

Initial Political Affiliations

Polanski's initial engagement with party politics began with membership in the Liberal Democrats, a centrist party emphasizing and pro-European Union stances. He became an active member and stood as a candidate for the London Assembly in the 2015 election, opposing the incumbent mayor while aligning with the party's advocacy for and . His motivations for joining included attraction to the Liberal Democrats' positions on issues like remaining in the , evidenced by his vocal intervention during the 2016 Brexit referendum campaign, where, as a party candidate, he heckled leader for perceived ambivalence toward . Polanski left the Liberal Democrats in 2017, stating that he was deeply unhappy with the party's support for measures enacted during its 2010–2015 with the Conservatives, which he viewed as a betrayal of principles. This departure reflected empirical disillusionment with the coalition's fiscal policies, including public spending cuts that disproportionately affected lower-income groups, prompting a search for alternatives further to the left.

Transition to the Green Party

Polanski joined the of in 2017, following prior involvement with the Liberal Democrats. He cited the party's emphasis on addressing , , and amplifying marginalized voices as key alignments, positioning the move as a counter to Labour's shortcomings and the emergence of far-right influences in British politics. In 2018, Polanski assumed the role of treasurer for , the party's subgroup focused on Jewish members and issues. This position involved managing finances and supporting initiatives within the Jewish community aligned with Green principles, marking his early organizational contributions. His initial activities remained low-profile, centered on local party leadership as chair in Hackney and national-level support for candidates through campaigning, appearances, and collaboration with activists, unions, and migrant workers. These efforts built networks without immediate pursuit of high-visibility office, reflecting a gradual integration amid critiques of established parties' environmental inaction—such as the Liberal Democrats' coalition-era compromises on measures that undermined economic reforms.

Political Roles and Achievements

London Assembly Membership

Zack Polanski was elected as a member of the on 6 May 2021, representing the party on the London-wide additional member list; the Greens retained their three seats from 2016 amid a turnout of 40.1%. As part of the opposition, Polanski focused on scrutinizing Khan's administration, particularly through work and questions on environmental and housing delivery. In housing and , Polanski campaigned against slow progress in London's homes to meet net-zero targets, publishing a report titled London's 'Retrofit Revolution': What's Going Wrong?, which highlighted that upgrades under schemes like Warmer Homes reached fewer than 1% of eligible homes annually—10 times slower than required for 2030 goals—and noted £1.6 million underspent in one program alongside shortages of trained Retrofit Coordinators (only 16 city-wide). He led a budget-related motion passed unanimously by on 25 January 2024, urging prioritization of retrofit skills training in the Mayor's 2024-25 budget to address workforce gaps and create green jobs, though implementation relies on executive action and has seen limited acceleration per ongoing critiques of underspending. On transport, Polanski interrogated the during sessions on expanding low-emission measures, supporting (ULEZ) rollout as insufficient alone but advocating complementary road charging to curb emissions and fund sustainable infrastructure; in May 2021 questioning, he pressed for details on commitments to national ministers amid post-pandemic recovery. Outcomes included cross-party motions influencing minor policy tweaks, such as a March 2024 commitment to increased funding for live amid economic pressures, but empirical data shows persistent gaps, with 's transport carbon reductions lagging deeper systemic reforms promised pre-election. Overall, Polanski's interventions yielded unanimous support for select motions and spotlighted delivery shortfalls—e.g., retrofit training gaps persisting despite advocacy—but measurable impacts remain modest, as the Greens' minority status limits binding influence over the Mayor's priorities, with no independent audits crediting direct causal shifts in or transport metrics beyond rhetorical pressure.

Deputy Leadership

Zack Polanski was elected deputy leader of the Green Party of England and Wales in September 2022, alongside another deputy, under the co-leadership of Carla Denyer and Adrian Ramsay. In this position, he assisted in coordinating party activities, including strategic planning for membership recruitment and electoral campaigns, as the party expanded its presence in local and national politics during 2023 and 2024. Polanski's contributions emphasized bolder outreach and policy articulation to appeal to broader voter bases, reflecting efforts to unify internal factions around growth-oriented objectives amid rising competition from other parties. While the team navigated debates over tactical approaches, such as drawing lessons from populist movements, Polanski focused on enhancing the party's visibility and organizational strength without reported major rifts during his initial tenure.

Leadership of the Green Party

Zack Polanski was elected Leader of the of on 2 September 2025, securing victory in the party's contest against co-leaders Ellie Chowns and . His platform centered on "eco-populism," advocating for direct, unapologetic communication to challenge established political norms and expand the party's reach beyond traditional . In the immediate aftermath, the party saw a rapid membership increase, surpassing 100,000 members by 12 October 2025—a near-50% rise from pre-election levels—and reaching 140,000 by late October, effectively doubling the base and overtaking the to become the UK's third-largest by membership. This surge coincided with improved polling, including record-high support levels that positioned the Greens as a viable alternative for disaffected voters, evidenced by defections such as Labour councillors joining the party. Polanski's leadership also garnered external recognition, including selection for the TIME100 Next list on 30 September 2025, which spotlighted his potential to influence global discourse on and equity. Strategic adjustments under Polanski included heightened emphasis on wealth taxes as a mechanism, which resonated in surveys showing broad voter appeal among younger demographics and those prioritizing reduction— with internal data indicating up to 70% support in targeted constituencies—yet faced scrutiny over practical implementation amid fiscal constraints and potential risks documented in economic analyses. Party conference addresses in autumn 2025 reinforced these shifts, urging bolder outreach while navigating internal debates on balancing radicalism with electability. Despite gains, challenges persisted in converting membership momentum into parliamentary seats, as historical data from prior surges showed limited translation to national vote shares without sustained organizational reforms.

Policy Positions

Economic Views and Proposals

Polanski advocates for a of 1% on net assets exceeding £10 million and 2% on assets over £1 billion, estimating it would generate £15-25 billion annually to address without primarily funding public spending. He frames this as a "patriotic" measure to end "rip-off ," arguing it targets the super-rich to redistribute resources and curb excessive profiteering, rather than burdening workers through taxes. Supporters, including Polanski, contend such taxation could reduce wealth disparities, citing groups like the who endorse higher levies on the affluent as a for societal cohesion. Polanski rejects the conventional analogy likening national economies to household budgets, asserting that governments issuing sovereign currencies face no inherent funding constraints akin to personal finances, a echoing (MMT) principles. In interviews, he has called for dismantling this "bad metaphor" to enable bolder public investments, positioning it as a away from austerity-driven . This view underpins his broader critique of neoliberal economics, favoring state-led interventions over market reliance for growth and equity. Critics argue Polanski's proposals overlook empirical evidence of behavioral responses to high wealth taxes, such as and investment disincentives observed in jurisdictions like , where a similar prompted wealthy individuals to relocate, reducing projected revenues. Analyses from think tanks highlight that even targeting assets above £10 million could erode UK's competitiveness, with historical data from high-tax regimes showing diminished and slower GDP due to reduced incentives for accumulation. Polanski dismisses capital concerns as a "myth," but detractors point to verifiable outflows in comparable policies, questioning the feasibility of revenue targets amid global mobility of capital. While proponents envision a transformative reduction in , empirical studies indicate wealth taxes often yield lower-than-expected funds after accounting for evasion and economic distortions.

Environmental and Climate Policies

Zack Polanski has advocated for accelerated as chair of the London Assembly's Environment Committee since 2021, leading investigations into reduction, improvements, climate adaptation strategies, and initiatives. He has pushed the to expedite progress toward by 2030, criticizing delays in implementation despite the city's ambitious target set in 2022, which aims to achieve full decarbonization twenty years ahead of the national timeline. In December 2021, Polanski proposed and secured passage of a motion endorsing the Climate and Ecological Emergency (later reintroduced as the Climate and Nature in October 2024), which seeks legally binding reductions in UK aligned with the , alongside measures to halt biodiversity loss and establish a for policy input. Under his leadership of the , elected on September 2, 2025, Polanski promotes "eco-populism," framing environmental policies as a means to address inequality through taxing extreme wealth to fund green jobs, expanded deployment, and of the to prevent and ensure sustainable management. He has actively opposed new extraction, joining protests on October 18, 2025, against the Rosebank oil field development and urging government investment in renewables over domestic oil drilling. These positions align with the party's broader commitments to a Green New Deal-style transition, emphasizing rapid decarbonization and , though Polanski's public statements prioritize renewables and wealth redistribution to mitigate transition costs for lower-income groups. While Polanski's proposals aim for transformative change, their feasibility is constrained by substantial economic requirements; achieving London's net zero by 2030 could necessitate offsetting residual emissions at costs ranging from £634 million to £4.2 billion annually by that year, amid challenges in scaling intermittent renewables without reliable baseload alternatives like nuclear. UK-wide net zero pathways, which Polanski seeks to advance aggressively, are projected to require average annual investments equivalent to about 0.2% of GDP through 2050, with upfront low-carbon spending scaling to £50 billion yearly post-2030, potentially straining public finances and energy security if global emission reductions lag, as unilateral action risks carbon leakage and limited marginal benefits. Critics, including analyses from the Office for Budget Responsibility, highlight fiscal risks from such accelerated timelines, estimating potential public sector costs in the hundreds of billions without corresponding private sector uptake or technological breakthroughs.

Foreign Policy, Israel, and Antisemitism

Polanski has advocated for the to withdraw from , describing the alliance's structure as outdated and overly influenced by U.S. interests, particularly in light of potential shifts under figures like . He has argued that reform efforts are futile and that the organization's era has ended, though he has specified that exit should not be immediate to allow for alternative European defense arrangements. This stance aligns with broader skepticism toward militaristic alliances, prioritizing and conflict prevention over collective defense commitments. On the Israeli-Palestinian conflict, Polanski has expressed vehement opposition to Israeli government policies, accusing them of committing war crimes and genocide in Gaza. In June 2025, as deputy leader, he described the UK Labour government under Keir Starmer as "active participants" in genocide for continuing arms sales and diplomatic support for Israel, calling for an immediate halt to such exports and recognition of Palestinian statehood. In September 2025, shortly after becoming leader, he demanded the arrest of Israeli President Isaac Herzog during a planned UK visit, citing Herzog's role in a government responsible for alleged atrocities, and criticized the UK for hosting Israel's delegation at the Defense and Security Equipment International (DSEI) arms fair rather than expelling it. The Green Party under his leadership has also urged the BBC to boycott Eurovision coverage if Israel's state broadcaster participates, framing it as complicity in "artwashing" occupation and violence. As a Jewish —one of only five in the last century to lead a major British party—Polanski has repeatedly affirmed his commitment to combating , stating in October 2025 that he takes the issue "really seriously" and has historically pushed for adoption of the (IHRA) definition within the to address internal incidents. Following the October 2023 attacks and subsequent rise in antisemitic incidents, he condemned while distinguishing from Jew-hatred, arguing that equating protests with antisemitism conflates with state policy and exacerbates insecurity for opposed to those policies. However, critics, including pro-Israel outlets, have questioned the party's for antisemitism under his leadership, pointing to deputy leader Mothin Ali's controversial remarks—described as inflammatory and minimizing atrocities—as evidence of insufficient safeguards, despite Polanski's defenses that requires opposing both Israeli actions and against . Polanski has countered such critiques by emphasizing proactive party measures against hate, including responses to events like the October 2025 terror attack linked to rising antisemitism.

Controversies and Criticisms

Past Hypnotherapy Practices

Prior to entering politics, Zack Polanski practiced , offering paid sessions focused on , reduction, and body image enhancement, with fees around £222 per session. In 2013, he agreed to a session requested by a Sun journalist seeking to increase breast size and boost body confidence, claiming the technique could stimulate physical changes through mental suggestion and visualization, potentially leading to non-surgical enlargement. He described this as an emerging approach with potential mainstream appeal, positioning it as a mind-over-matter to cosmetic procedures. No credible supports hypnotherapy's capacity to induce measurable ; mammary is governed by , hormones, and physiological factors, with hypnotic lacking any verified to alter cellular or fat deposition in . While small 1970s studies, such as those by Willard (1977) involving 22 volunteers practicing and , reported average circumference increases of about 2 inches correlated with visualization frequency, these lacked rigorous controls, long-term follow-up, and replication, rendering them inconclusive and prone to confounders like weight fluctuations or subjective measurements. Mainstream medical consensus attributes any perceived changes to effects, expectation , or natural variability rather than causal efficacy. These practices resurfaced in media scrutiny in September 2025, shortly after Polanski's election as Green Party leader, prompting critiques of pseudoscientific promotion and ethical lapses in charging for unproven physical outcomes. Polanski issued an apology, stating he no longer endorses claims of physical enlargement via hypnosis, attributing his 2013 stance to an intent to aid confidence rather than literal growth, and disavowing belief in "thinking" breasts larger. He framed the episode as a learning experience from his pre-political career. Offering interventions for somatic changes without empirical backing implicates potential misleading of clients, fostering false hope and diverting resources from validated options like or surgery, while underscoring risks of in therapeutic claims. Endorsing such causal assertions historically, absent rigorous validation, can erode trust in one's discernment of hierarchies, particularly where hinges on verifiable outcomes over anecdotal suggestion.

Economic Policy Critiques

Critics of Zack Polanski's advocacy for a on assets exceeding £10 million, estimated by the to generate £15-25 billion annually, argue that such projections overlook substantial risks of evasion, avoidance, and , which historically diminish actual revenues far below optimistic forecasts. Analyses indicate that implementation could prompt outflows of £200-500 billion in capital, eroding the tax base and yielding net revenues closer to negligible sums after administrative costs and behavioral responses. This distortion penalizes savings and investment, reducing incentives for productive economic activity and potentially stifling growth, as evidenced by the UK's recent fiscal deficit exceeding £100 billion, where even full realization of the proposed yield would cover only a fraction of spending gaps. Historical precedents underscore these concerns, particularly France's Impôt de Solidarité sur la Fortune (ISF), which operated from 1982 until its partial repeal in 2018 and generated revenues equivalent to just 0.2-0.3% of GDP annually—far short of expectations—while driving significant capital flight, with over 60,000 millionaires emigrating and contributing to economic stagnation through reduced investment. Similar outcomes prompted Sweden, Germany, Austria, and Denmark to abandon their wealth taxes in the late 20th and early 21st centuries, citing administrative burdens, valuation disputes on illiquid assets, and net revenue shortfalls after evasion. Polanski's defense, framing the tax as a tool to address "deep inequality" without deterring the ultra-wealthy, contrasts with empirical data showing such levies fail to materially redistribute wealth or fund ambitious public spending, instead fostering dependency on borrowing amid stagnant productivity. Broader critiques target Polanski's emphasis on expansive fiscal outlays—such as and green investments—without corresponding mechanisms to spur private-sector growth, warning that reliance on punitive taxation exacerbates fiscal imbalances rather than resolving them. Proponents within the counter that rejecting enables sustainable investment, yet opponents cite evidence from high-tax regimes where elevated public spending correlates with lower GDP growth rates and higher debt-to-GDP ratios, as seen in post-2008 European economies pursuing similar paths. This approach, dubbed "eco-populism" by detractors, risks perpetuating "empty promises" by promising transformative funding streams that empirical models predict will underperform, ultimately burdening future generations with inflated borrowing costs absent structural reforms for competitiveness.

Political Stances and Internal Party Issues

Polanski joined the Liberal Democrats in 2016 before defecting to the in 2017, a rapid shift that prompted accusations of political opportunism from critics who portrayed it as a strategic move rather than ideological conviction. Such claims were amplified by Liberal Democrat commentators, who highlighted the lack of emphasis on environmental priorities in Polanski's initial communications as , interpreting it as evidence of diluted commitment to core Green tenets amid a pivot toward broader "eco-populism." Within the Green Party, Polanski's leadership has intersected with persistent internal tensions over , particularly tied to the party's and advocacy for Palestinian state recognition. As a Jewish , Polanski has publicly stressed the need to address rising , including in response to events like the October 2025 Manchester synagogue attack, while defending the party's positions against what he views as conflations of with prejudice. However, these stances have fueled debates, exemplified by 2018 conference disputes over an emergency motion on that allocated limited debate time amid heightened concerns, leading to accusations of inadequate handling. Further strains emerged in 2025 when Polanski faced scrutiny over deputy leader Mothin Ali's remarks minimizing the , 2023, attacks, prompting internal questions about senior members' statements and the party's broader record on . External watchdogs, including the , have labeled the Greens a potential "hub" for in politics, citing unresolved ideological frictions that Polanski's defenses have not fully quelled, contributing to perceptions of fractured party coherence on foreign policy-related issues. During the 2025 leadership contest, Polanski's campaign emphasized transformative "eco-populism" over co-leadership continuity, winning in a against challengers like Ellie Chowns and , but this victory masked underlying divisions on strategic direction, with some members wary of alienating traditional environmental focus for populist appeals. These dynamics have empirically tested party unity, as evidenced by membership growth exceeding 140,000 amid Polanski's tenure—doubling from prior levels—yet accompanied by heightened media and internal scrutiny over ideological consistency.

Reception and Impact

Public and Media Reception

Zack Polanski's ascension to leadership in September 2025 elicited predominantly positive coverage in left-leaning media outlets, which highlighted his potential to revitalize amid dissatisfaction with . described his approach as offering "hope for a new kind of " and focusing on unifying issues like wealth taxation, portraying him as a counter to national despair. Similarly, outlets like The Canary credited him with demonstrating "the real politics of hope" at public events, such as a sold-out meeting in on October 26, 2025. Polling data indicates growing voter appeal, particularly among younger demographics, though membership surges do not always correlate with proportional electoral turnout given the party's historical vote shares below 5% in national elections. A October 2025 survey showed the Greens leading with 32% support among 18-24-year-olds, 18% among 25-49-year-olds, and 16% among 2024 voters, coinciding with party membership doubling to over 140,000 within weeks of his election. analysis noted this momentum but questioned its translation into broader power, citing visibility gains yet persistent challenges in voter conversion. Right-leaning and skeptical commentators have dismissed Polanski as promoting unfeasible "eco-populism," with labeling his pledges "empty promises" amid Labour's polling decline. Coverage in conservative-leaning press often frames his rise as a symptom of left-wing disarray rather than viable alternative, prompting Polanski to publicly embrace the as inadvertently boosting his profile. This polarization reflects broader media divides, where progressive sources amplify enthusiasm for his outsider appeal while outlets wary of emphasize economic risks, though empirical membership metrics substantiate short-term organizational gains under his tenure.

Influence on UK Politics

Polanski's ascension to leadership on September 2, 2025, with an 85% vote share has driven a rapid expansion in party membership, surpassing 130,000 by October 2025 and overtaking the Conservatives to rank as the 's third-largest party by this metric. This surge, fueled by his emphasis on bold left-wing policies, has positioned the Greens as a challenger to from the left, particularly among disaffected voters frustrated with the government's fiscal restraint. Recent polls reflect this momentum, with the party polling at 15% overall—more than double prior levels—and leading at 32% among 18- to 24-year-olds, alongside 18% support from 25- to 49-year-olds and 16% from 2024 voters. His advocacy has elevated specific debates, notably on wealth taxation, where proposals for an annual levy on assets of the richest 1% have compelled responses from mainstream outlets and figures, framing it as a tool against despite lacking robust evidence of net gains without capital outflows. In urban strongholds like , the Greens under Polanski have drawn defectors, including councillors, signaling localized pressure on 's hold and potential vote-splitting in cosmopolitan constituencies. Recognition as one of Time magazine's 100 Next influential leaders underscores perceptions of his role in reshaping left-of-centre dynamics, akin to how prior Green surges amplified environmental and redistributive issues without proportional electoral breakthroughs. Empirically, however, the party's influence remains constrained by marginal parliamentary presence—four post-2024 election—and historical patterns where membership booms, as in , yielded limited seats despite heightened visibility. Analysts view Polanski as a potential "" for injecting disruption into politics, yet sustained impact hinges on converting rhetorical momentum into policy realism; unchecked adoption of expansive fiscal measures risks economic deterrence, as evidenced by international precedents of reversals due to and investment flight. This positions the Greens under his lead as a discourse-shaper rather than a dominant force, with broader effects likely confined to pressuring Labour's left flank amid Reform 's rightward pull.

References

  1. [1]
    Zack Polanski: Who is the new Green Party leader? - BBC
    Sep 2, 2025 · Zack Polanski has stormed to victory in the Green Party leadership election on a platform promising bold communication and "eco-populism".
  2. [2]
    Who is Zack Polanski? The 'eco-populist' new leader of the Green ...
    Sep 2, 2025 · Mr Polanski has decisively won a leadership election to be the next leader of the Greens on a pledge to introduce "eco-populism".
  3. [3]
    Meet Zack Polanski, the ex-Lib Dem, ex-hypnotherapist set to lead ...
    Sep 2, 2025 · Zack Polanski was once caught in a newspaper sting performing hypnotherapy sessions to enlarge women's breasts. Now he wants to be the Nigel ...Missing: biography | Show results with:biography
  4. [4]
    Zack Polanski - London Assembly Member
    Zack Polanski was elected to the London Assembly in May 2021. He is a strong advocate for electoral reform and has been a spokesperson for Make Votes Matter.
  5. [5]
    Zack Polanski for leader of the Green Party
    I'm Zack Polanski Deputy Leader of the Green Party and a London Assembly Member, elected in 2021 & re-elected in 2024.
  6. [6]
    Starmer will hand Britain over to Farage, says Green party leader ...
    Oct 3, 2025 · His ancestors, who moved to England from Latvia via Ukraine and Poland, still faced antisemitism in the UK, he said: “They changed their name to ...<|control11|><|separator|>
  7. [7]
    Zack Polanski: “We absolutely need to stop the boats”
    Oct 1, 2025 · Zack Polanski: “We absolutely need to stop the boats”. The Greens ... Zack Polanski was born David Paulden in Manchester in November 1982.<|separator|>
  8. [8]
    Green Party elects Jewish non-Zionist Zack Polanski as new leader
    Sep 2, 2025 · Defiantly, Polanski said the as being both “pro-European” and a “Jew” there were “two reasons” for his opposition to Corbyn. He has also spoken ...
  9. [9]
    Zack Polanski elected Green Party's first Jewish leader
    Sep 2, 2025 · The former actor and hypnotherapist is the first Jewish leader of any major political party in the UK since Ed Miliband.
  10. [10]
    Why Zack Polanski isn't the working class hero he'd have you believe
    Oct 4, 2025 · After A-levels, he went to study drama at Aberystwyth University. Around this time, he decided to change his name from David Paulden. In a ...
  11. [11]
    Green, Jewish and seeking truth | Jewish Socialists' Group
    Sep 2, 2025 · Zack Polanski, Deputy Leader [now Leader] of the Green Party and a member of the London Assembly, spoke to Jewish Socialist about democracy, ...
  12. [12]
    'I thought politics was a dirty thing' – Zack Polanski on his 'eco ...
    May 13, 2025 · By coincidence, I meet Zack Polanski, the 42-year-old deputy leader of the Green party, in a cafe on the same bridge – Waterloo – where he was ...
  13. [13]
    Zack Polanski - Leader of the Green Party. - LinkedIn
    Education. Prifysgol Aberystwyth University Graphic. Aberystwyth University. Acting. 2003 - 2005. Ridge Danyers Marple College. -. 1997 - 1999.
  14. [14]
    Profile: Zack Polanski, Green party leader | The Observer
    Sep 6, 2025 · The former actor and hypnotherapist has swept in on a tide of leftwing populism that will worry Labour.
  15. [15]
    Who is the Green's new 'eco-populist' leader Zack Polanski
    Sep 3, 2025 · He attended Aberystwyth University and later a drama school in Georgia in the United States, moving to London upon graduation. Before ...
  16. [16]
    Disciples (Actors and Crew) - Son of Man Official Site.
    ZACK POLANSKI: (LYSANDER) Zack Polanski graduated from drama school in Georgia, USA after studying at the University of Wales, Aberystwyth.<|separator|>
  17. [17]
    Zack Polanski - IMDb
    Zack Polanski. Actor: Art of Suicide. Zack Polanski is known for Art of Suicide (2007), Seven Crosses (2008) and Bashment (2011).
  18. [18]
    Meet Zack Polanski, the ex-Lib Dem, ex-hypnotherapist set to lead ...
    Sep 2, 2025 · Zack Polanski elected Green Party leader. Your support helps us to ... The former actor and hypnotherapist, who was deputy leader from 2022 ...
  19. [19]
    Zack Polanski: “We don't have time for 'briefcase politics'”
    May 16, 2025 · My main job before politics was working as a community theatre actor, working with marginalised groups to tell their stories. This work made ...Missing: entertainment pre-
  20. [20]
    Zack Polanski, Hypnotherapist - London - Kentishtowner
    Jan 1, 2013 · Zack Polanski is a Kentish Town resident and Cognitive Hypnotherapist. Based at the Lewis Clinic on Harley Street, he works with a variety of clients.
  21. [21]
    New Green Party leader was hypnotherapist who claimed women ...
    Sep 2, 2025 · He makes several claims that hypnosis can and will have a physical impact, including on hair, nail, and breast growth. HAS the time come when we ...Deputy Green Party Leader admits to performing hypnotherapy to ...Zack Polanski, "I changed my name back to my family's original ...More results from www.reddit.com
  22. [22]
    Former hypnotherapist who claimed he could enlarge breasts with ...
    Sep 2, 2025 · A FORMER hypnotherapist who claimed he could enlarge breasts with his mind is the new Green Party leader.Zack Polanski, 42, will take over ...
  23. [23]
    Polanski apologises over claim he can increase women's breast ...
    Sep 3, 2025 · Zack Polanski has apologised for claiming to have been able to help women increase the size of their breasts using his mind. The newly elected ...
  24. [24]
    Deputy Green Party Leader admits to performing hypnotherapy to ...
    Jun 12, 2024 · Zack Polanski, the deputy leader of the Green Party, has admitted to performing hypnotherapy to 'enlarge' women's breasts in the past.
  25. [25]
    About Kirsty
    Hypnotherapy ... I trained at Regent's University London with Ali Knowles creator/founder/author of 'Ollie and His Superpowers' and co-trainer Zack Polanski.
  26. [26]
    Can hypnotherapy make your breasts bigger?
    Jul 3, 2025 · The deputy leader of the Green Party has admitted to using hypnotherapy to enlarge women's breasts. Where do you even start with THAT?
  27. [27]
    Zack Polanski - London City Hall Greens
    Zack's background sits in the gig economy, where he previously worked as an actor, youth worker, mental health counsellor and in the hospitality sector. Zack ...
  28. [28]
    Who is Zack Polanski? The radical politician elected as the new ...
    Sep 2, 2025 · Before politics, Polanski attended drama school and worked as an actor, youth worker, mental health counsellor and had several roles in ...
  29. [29]
    Who is Zack Polanski? - Socialism Today
    Jul 1, 2025 · ... Lib-Dem coalition government austerity and unenthused by Ed Miliband's Labour leadership. But not Zack Polanski. In spring 2015 he was ...
  30. [30]
    Zack Polanski (Liberal Democrat, then Green Party) - Mark Pack
    Read about London Liberal Democrat activist and candidate, Zack Polanski. He subsequently joined the Green Party.
  31. [31]
    Video resurfaces of Zack Polanski, then a Lib Dem Candidate ...
    Oct 17, 2025 · Video resurfaces of Zack Polanski, then a Lib Dem Candidate, heckling Jeremy Corbyn for his stance on Europe during the Brexit campaign.<|separator|>
  32. [32]
    Green candidate failed to disclose article claiming he could make ...
    Mar 19, 2019 · He claims he left the Liberal Democrats and joined the Greens in 2016 because “he was deeply unhappy with the [Liberal Democrat] party's support ...
  33. [33]
    Zack Polanski: the potential dark horse in mainstream politics
    Sep 19, 2025 · Will the new Green Party leader become a heavyweight in mainstream politics or remain close to the fringes?<|control11|><|separator|>
  34. [34]
    Jewish Greens statement on the Green Party's internal election results
    Sep 2, 2025 · We would like to congratulate Zack Polanski, our former Treasurer, on his election as Party Leader. We're very proud of him and wish him a ...
  35. [35]
    Results 2021 | London Elects
    Results 2021 · See results for other years · Voter turnout · Mayor of London Sadiq Aman Khan · London Assembly seats (25 in total) · London Assembly Constituency ...
  36. [36]
    London's 'Retrofit Revolution': What's Going Wrong?
    It's time the Mayor provides the strategic leadership on retrofit London urgently needs, and delivers the revolution he promised. Zack Polanski AM September ...
  37. [37]
    Zack Polanski AM motion for London's cold homes lands unanimous ...
    Jan 26, 2024 · Green Party London Assembly Member Zack Polanski said: “Retrofitting is a triple win: it creates good green jobs, lowers emissions, and reduces ...
  38. [38]
    Investment for training in retrofitting skills - Greater London Authority
    On 25 January 2024 the London Assembly unanimously passed my budget related motion, calling on you to prioritise addressing the gaps in training workers in ...
  39. [39]
    Zack Polanski gets Mayor's commitment to fund more London theatre
    Mar 7, 2024 · Passed with cross-party support, Zack Polanski AM led a successful motion to commit the Mayor to supporting live performances of arts and ...Missing: achievements | Show results with:achievements
  40. [40]
    Green Party deputy is former hypnotherapist who said he could help ...
    Jun 6, 2024 · Zack Polanski was elected Green Party deputy leader in September 2022 Credit: Getty Images/Dan Kitwood. Amy Gibbons Political Correspondent.
  41. [41]
    Zack Polanski: Who is the new Green Party leader? - BBC News
    Sep 2, 2025 · Zack Polanski elected leader of the Green Party · 2 September ; Councillor elected Green Party joint deputy leader · 2 September ; The Green Party ...
  42. [42]
    The Green Party is at a crossroads. Is it time they get angry? - BBC
    Aug 18, 2025 · ... Zack Polanski. Image caption,. Zack Polanski, a former actor who is the party's deputy leader, has turbo-charged the race. The Green Party is ...
  43. [43]
    Green deputy launches leadership bid with UK 'eco-populism' vision
    May 5, 2025 · Exclusive: Surprise challenger Zack Polanski says party can learn from success of Nigel Farage and Reform UK.
  44. [44]
    Zack Polanski: Eco-populist winner of Green leadership with ...
    Sep 2, 2025 · The Green Party's new leader is Zack Polanski (PA). open image in ... After being elected Green Party deputy leader in 2022, Mr Polanski ...
  45. [45]
    Zack Polanski Elected Leader of the Green Party of England and ...
    Sep 2, 2025 · Before entering politics, Zack worked in community theatre, specialising in Theatre of the Oppressed with marginalised communities to help ...<|separator|>
  46. [46]
    Zack Polanski sweeps the Green leadership - New Statesman
    Sep 2, 2025 · Zack Polanski has won the Green Party leadership election. The result was announced at an event in central London this morning.
  47. [47]
    Green party reaches 100000 members for first time after Polanski ...
    Oct 12, 2025 · Green party in England and Wales has had near-50% rise in membership since since Zack Polanski took over last month.
  48. [48]
    https://www.theguardian.com/politics/2025/oct/26/green-membership-surge-zack-polanski
  49. [49]
    https://greenparty.org.uk/2025/10/19/green-party-membership-surges-past-conservatives-making-the-greens-third-largest-political-party-in-the-uk/
  50. [50]
    Green Party membership surges past 100000 as polls show record ...
    Oct 13, 2025 · Green Party Leader Zack Polanski said: “More than 100,000 people have now joined the Green movement, that's 100,000 people who believe politics ...<|separator|>
  51. [51]
    https://www.youtube.com/watch?v=UvrRzp6U3VQ
  52. [52]
    Zack Polanski: TIME100 Next 2025 - Time Magazine
    Sep 30, 2025 · Find out how Zack Polanski is shaping the future and defining the next generation of leadership.
  53. [53]
    Can Zack Polanski's Greens turn momentum into power? - BBC
    Oct 5, 2025 · Ex-actor Zack Polanski's unusual path to become Green Party's new leader. The Greens have long relied on grassroots energy and volunteer labour.
  54. [54]
    https://www.bbc.com/news/articles/cly2nyz3ed2o
  55. [55]
    Greens' Polanski Sets Out 'Patriotic' Case for UK Wealth Tax
    and said jitters in bond markets were being prompted by a lack ...
  56. [56]
    Tax wealthiest to end rip-off Britain, says Green leader Polanski - BBC
    Oct 3, 2025 · Green Party leader defends wealth tax proposals. Zack Polanski says a new tax on the rich would tackle "the deep inequality in our society". 7 ...<|control11|><|separator|>
  57. [57]
    Why is it always hard choices for working-class communities
    Zack Polanski, "We need to tax wealth, not work" Jane Moore, "Won't rich people leave?" Zack Polanski, "That's a myth. There's a group called the Patriotic ...
  58. [58]
    https://www.taxresearch.org.uk/Blog/2025/10/23/talking-with-zach-polanski/
  59. [59]
    New leader of the Green Party Zack Polanski on how to grow the ...
    Sep 22, 2025 · It is simply economic lunacy to borrow more and more money - the market won't like it. This is populist nonsense and voters deserve more honesty ...Missing: commentary | Show results with:commentary
  60. [60]
    Zack Polanski is an eco fantasist - UnHerd
    Sep 1, 2025 · ... Zack Polanski ... Jewish politico in British history. Born David Paulden, he reclaimed his former family name, and his religious heritage, at 18.
  61. [61]
    Polanski is talking nonsense about wealth tax - Prosperity Institute
    Oct 14, 2025 · Polanski assured the audience that a wealth tax would only fall on those with more than £10 million in assets – as if this made it both morally ...
  62. [62]
    Zack Polanski elected new Green Party leader - edie
    Sep 2, 2025 · Zack Polanski leads the Green Party with bold actions on climate, housing & inequality. Tackling extreme wealth and promoting eco-populism ...
  63. [63]
    https://www.standard.co.uk/news/uk/zack-polanski-rosebank-oil-field-protest-b1253632.html
  64. [64]
    Green Party Zack Polanski on public water and solar power - BBC
    Oct 3, 2025 · BBC South's political editor Peter Henley has been speaking to party leaders, or deputy leaders, during the autumn party conferences.
  65. [65]
    [PDF] London Net Zero 2030: An Updated Pathway
    The Element Energy report estimates the cost of offsetting residual emissions in 2030 could range from £634 million to £4.2 billion in the Accelerated Green ...
  66. [66]
    The Seventh Carbon Budget - Climate Change Committee
    Feb 26, 2025 · We estimate that the net costs of Net Zero will be around 0.2% of UK GDP per year on average in our pathway, with investment upfront leading to ...
  67. [67]
    The fiscal cost of net zero in the UK in an international context - OBR
    Our 2021 Fiscal risks report (FRR) set out a range of scenarios for the potential fiscal cost of getting to net zero by 2050.
  68. [68]
    Green Party Deputy Leader Zack Polanski Says UK Must Leave ...
    May 8, 2025 · “I think our NATO policy is out of date,” Polanski said, citing his party's commitment at the last general election to remain within the ...
  69. [69]
    UK political class 'poisoned by wealth', says Zack Polanski as he ...
    Oct 3, 2025 · Polanski told Byline Times that “I think our NATO policy is out of date…the idea that we can reform NATO…is an idea that's on its last legs”. ...
  70. [70]
    Why Britain should leave Nato - Socialist Worker
    Sep 4, 2025 · The only thing wrong with Polanski's remarks on Nato is that he doesn't go far enough. He said that Britain shouldn't leave Nato immediately, ...
  71. [71]
    Zack Polanski's NATO Shuffle: How To Sound Radical While ...
    Oct 17, 2025 · His once staunch anti-war stance has shifted to rattling sabres at Russia whilst committing endless billions to Ukraine. The man who wanted ...
  72. [72]
    Labour government not just complicit - they are active participants in ...
    Jun 21, 2025 · Deputy leader of the Green Party, Zack Polanski, spoke at today's ... The UK must immediately end arms sales to Israel, support an ...
  73. [73]
    Greens call for the arrest of Israeli president Isaac Herzog
    Sep 9, 2025 · Green Party leader Zack Polanski has called for the arrest of ... But instead of kicking Israel out of DSEI, the government seems happy ...
  74. [74]
    UK Green Parties demand BBC withdraw from Eurovision coverage ...
    Sep 12, 2025 · ... Israel's state broadcaster is permitted to participate. In a letter ... Zack Polanski, Leader of the Green Party of England and Wales, said:.
  75. [75]
    Green Party leader Zack Polanski grilled over deputy Mothin Ali's ...
    Oct 3, 2025 · I'm also one of five Jewish people in British political history to be leader of a party in the last 100 years so I take antisemitism really ...Missing: views | Show results with:views
  76. [76]
    Green Party Leader Zack Polanski reacts to Manchester Terror Attack
    Oct 2, 2025 · ... Zack Polanski, said: “This horrific attack feels deeply personal ... It is a sad reflection of the growing antisemitism we've witnessed ...
  77. [77]
    Green Party leader slams UK minister for 'irresponsible' attack on ...
    Oct 3, 2025 · Polanski criticised Conservative leader Kemi Badenoch for linking language around Gaza to rising antisemitism. “No, I think Kemi Badenoch ...
  78. [78]
    Can you really THINK your boobs bigger? | - The Sun
    Jun 12, 2013 · Hypnotherapist Zack Polanksi reckons so. He says he can boost your cup size using the mind alone. “This is an extremely new approach, but I can see it becoming ...Missing: evidence | Show results with:evidence<|control11|><|separator|>
  79. [79]
    Breast enlargement through visual imagery and hypnosis - PubMed
    Breast enlargement through visual imagery and hypnosis. Am J Clin Hypn. 1977 Apr;19(4):195-200. doi: 10.1080/00029157.1977.10403875.Missing: evidence | Show results with:evidence
  80. [80]
    New Green Party leader Zack Polanski claimed women could ...
    Sep 2, 2025 · New Green Party leader was hypnotherapist who claimed women could increase breast sizes with minds. Zack Polanski elected after victory over ...<|control11|><|separator|>
  81. [81]
    Zack Polanski's humiliating breast hypnosis climbdown | The Spectator
    Oct 10, 2025 · To BBC Question Time, where new leader of the Greens Zack Polanski spent much of the evening sparring with Reform UK's Zia Yusuf.
  82. [82]
    https://thecritic.co.uk/zack-polanski-is-peddling-empty-promises/
  83. [83]
    UK wealth tax: high risk and anti-growth - Tax Policy Associates
    Jul 22, 2025 · To prevent avoidance and evasion, HMRC would realistically have to require a wealth tax return for people with assets approaching the threshold.
  84. [84]
    Economic study on wealth taxes - TaxPayers' Alliance
    Oct 29, 2024 · Executive summary · Wealth taxes have repeatedly failed · Wealth taxes do not generate material revenue · Wealth taxes create serious economic ...
  85. [85]
    Polanski is talking nonsense about wealth taxes | The Spectator
    Oct 14, 2025 · Polanski assured the audience that a wealth tax would only fall on those with more than £10 million in assets – as if this made it both ...
  86. [86]
    https://www.thetimes.com/comment/the-times-view/article/green-policies-grave-danger-zack-polanski-jv6l9gjjm
  87. [87]
    Private Eye Hp Sauce: Disowning the Libs
    THE Green party's new leader, Zack Polanski, has been commendably open about his past as a boob-hypnotist, having once claimed in the Sun that he could make ...
  88. [88]
    Zack Polanski's first email as Green Leader - Liberal Democrat Voice
    Sep 4, 2025 · Those who want a Party which treats the environment as a core priority won't find it in Zack Polanski's Greens. They will in Liberal Democrats.
  89. [89]
    Green Party conference opens as Polanski stakes out bold direction
    Oct 3, 2025 · Meanwhile questions were raised internally about remarks by senior members, including over antisemitism allegations, which Polanski ...
  90. [90]
    ADL CEO: British Green Party looking like next hub of antisemitism ...
    Jul 6, 2023 · The head of the Anti-Defamation League praised the British Labour Party for its efforts to combat antisemitism among its membership.
  91. [91]
    Leader - Green Party
    I'm Zack Polanski. Deputy Leader of the Green Party and experienced London Assembly Member. Politics hasn't always been my plan. I was born in Manchester, ...<|separator|>
  92. [92]
    Zack Polanski's victory brings hope for a new kind of politics
    Sep 10, 2025 · Letters: Readers respond to articles on the election of the new Green party leader.
  93. [93]
    https://www.theguardian.com/commentisfree/2025/oct/22/zack-polanski-green-party-britain
  94. [94]
    https://www.thecanary.co/opinion/2025/10/26/zack-polanski-darlington/
  95. [95]
    https://www.left-horizons.com/2025/10/23/zack-polanski-and-the-green-surge/
  96. [96]
    https://www.thelondoneconomic.com/politics/zack-polanski-articles-criticism-399588/
  97. [97]
    Right-Wing Media Watch: when the press panics, you know you're ...
    Oct 12, 2025 · Unlike other political figures who tend to cower before the tabloid firing squad, Polanski has welcomed the hysteria with open arms.
  98. [98]
    How Polanski's Green leadership could impact UK politics - BBC
    Sep 2, 2025 · Ex-actor Zack Polanski's unusual path to become Green Party's new leader · New Green leader Polanski vows to 'replace' Starmer's Labour · Two ...
  99. [99]
    Britain: New Green Party leader Zack Polanski energises party with ...
    The Green Party of England and Wales has been energised by a new leader, Zack Polanski. Polanski secured 85% of the vote in the leadership election, with 20,411 ...<|control11|><|separator|>
  100. [100]
    https://www.facebook.com/zackpolanski/posts/-the-green-party-have-hurtled-past-130000-eclipsing-number-of-conservative-membe/10120912463182990/
  101. [101]
    https://unherd.com/2025/10/the-green-partys-shallow-revolution/
  102. [102]
    Green Party leader named as 'one of the most influential people in ...
    Sep 30, 2025 · Green Party leader, Zack Polanski, has been included in this year's Time100 Next list, an annual list naming the 100 leaders shaping the ...