Only 13 rated questions; a transcript needs 15 for a number. Claims that held up: 74% of 25 checked (Bluff 13.0 of 50). Its claims still count towards the overall score.
Fact or Fluff
Supported13Partly supported13Can't verify4
30 claims checked against independent sources, chosen by a fixed rule (every material claim (one that supports an argument, a policy or an attack) in the transcripts that count towards a score; in other transcripts, up to 10 claims spread evenly across each; plus any claim an emotional passage relies on). 0 more were found but not checked yet; they do not count.
Quotes leave out filler sounds and repeated words. Words in [square brackets] correct a transcript that misheard or misspelt them. The transcript keeps every word as published.
Supported70% confidence
“a prime minister [Andy Burnham] who says he's going to end neoliberalism but rules out rent controls has his chief of staff as a literal corporate lobbyist.”
Claim checkedZack Polanski said that Prime Minister Andy Burnham, who says he will end neoliberalism, has ruled out rent controls and has a corporate lobbyist as his chief of staff.
Andy Burnham became prime minister, appointed James Purnell, CEO of lobbying firm Flint Global, as chief of staff, and his government (Angela Rayner) ruled out rent controls in July 2026 after he had floated a cap. I did not confirm his exact 'end neoliberalism' wording.
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Partly supported75% confidence
“We've seen today Tom Watson former deputy leader of the Labour party go and join [Palantir]”
Claim checkedZack Polanski said that Tom Watson, former deputy leader of the Labour party, had joined Palantir that day.
Tom Watson, Labour's former deputy leader, joined Palantir as UK senior vice president, but this was announced on 18 September 2026, about two and a half weeks before the event, not 'today'. He had been an adviser to the firm since 2024.
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Supported65% confidence
“the brilliant economist Mariana [Mazzucato] often says that it's not a government's job to fix market failures.”
Claim checkedZack Polanski said that economist Mariana Mazzucato often says it is not a government's job to fix market failures.
Mariana Mazzucato's published work argues the state should shape and create markets and not merely fix market failures. The statement paraphrases that argument.
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Not yet reviewed by a person
Can't verify50% confidence
“in terms of policies, there literally isn't any difference at all.”
Claim checkedZack Polanski said that there is no difference at all in policies between the parties or groups he was comparing.
The sentence does not make clear which two parties or groups are being compared, so there is no defined claim to check. Labour and the Greens differ on some stated policies, such as rent controls, but the referent here is unclear.
No source found. Left out of Accuracy.
Our model rated this · methodology v7Excluded from Accuracy
Not yet reviewed by a person
Supported90% confidence
“policy in the Green Party is made by the members.”
Claim checkedZack Polanski said that policy in the Green Party is made by its members.
The Green Party's constitution and policy-making process state that policy is decided democratically by members, through votes at conference, and that every policy in its Policies for a Sustainable Society was approved by members.
Our model rated this · methodology v7No independent source: excluded
Not yet reviewed by a person
Supported80% confidence
“there are still on average a child is dying in Gaza every single day.”
Claim checkedZack Polanski said that on average a child is still dying in Gaza every day.
UNICEF said in early August 2026 that at least 300 children had been reportedly killed in Gaza in the 300 days since the October 2025 ceasefire, an average of one a day.
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Partly supported70% confidence
“We're still selling arms to Israel.”
Claim checkedZack Polanski said that the UK is still selling arms to Israel.
The UK has suspended or refused more than 80 export licences for items the IDF could use in Gaza, and direct F-35 exports to Israel are suspended. However, UK components still flow into the global F-35 pool, and other licences remain, so some UK arms-related supply continues.
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Partly supported70% confidence
“we finally pushed for [Labour] government to take some basic steps like stop trading with illegal settlements, goods, and some services.”
Claim checkedZack Polanski said that the Green Party and campaigners pushed the Labour government to take basic steps such as stopping trade in goods and some services with illegal settlements.
In September 2026 the UK government announced a ban on imports of goods from illegal Israeli settlements and on some services such as financing, construction and real estate for them. Whether this was caused by the Green Party and campaigners is a judgement that cannot be verified, and some reports say the government is still working out the full scope of the service restrictions.
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Supported80% confidence
“nearly 3,000 people according to the UK health security agency have died this summer from the heat wave.”
Claim checkedAccording to the UK Health Security Agency, nearly 3,000 people died from heat during summer 2026's heatwaves.
UKHSA estimated 2,877 heat-associated deaths in the May (753) and June (2,124) 2026 heatwaves, and said the summer total was likely to be substantially higher once July was included. 'Nearly 3,000' fits the interim figure; the final figures are due in early 2027.
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Supported70% confidence
“The BBC reported yesterday, we need seven months, seven wet months to even have enough water supply to not have water scarcity.”
Claim checkedThe BBC reported that England needs about seven months of above-average rainfall to recover from drought and end water scarcity.
Government and Environment Agency drought data say England would need about 120% of typical rainfall sustained over the next seven months to bring all areas out of drought, with about three-quarters of England still in drought in September 2026. I could not find the specific BBC article, and 'seven wet months' paraphrases the 120%-of-normal condition.
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Partly supported75% confidence
“when we finally pushed Andy Burnham to having a Cobra meeting, he said he was going to ban disposable barbecues.”
Claim checkedWhen Andy Burnham chaired a Cobra meeting on the heatwave and drought, he said he would ban disposable barbecues.
After Burnham chaired a Cobra meeting in August 2026 on heat, drought and wildfires, he urged retailers to withdraw disposable barbecues from sale and said an outright ban could be considered; reports describe a possible ban rather than a firm commitment. Whether he was 'pushed' to hold the meeting is a characterisation I could not verify.
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Supported90% confidence
“this has been a safe Labor seat since 1983.”
Claim checkedHolborn and St Pancras has been a safe Labour seat since it was created in 1983.
Holborn and St Pancras has been held by Labour at every election since the seat was created in 1983 (Frank Dobson, then Keir Starmer), and is regarded as a safe Labour seat.
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Partly supported60% confidence
“another Labor MP to add to a 400 majority that will just vote with a Labor government”
Claim checkedA new Labour MP for Holborn and St Pancras would be added to a Labour parliamentary party of about 400 MPs that has a large majority.
Labour has about 400 MPs (402 at the time of Burnham's leadership nomination in July 2026), so a Labour MP would join a very large group. 'A 400 majority' is loose: 400 is roughly Labour's number of MPs, not its majority over other parties. What a Labour MP would vote for in future is a prediction.
Our model rated this · methodology v7Counts in Accuracy
Not yet reviewed by a person
Can't verify50% confidence
“genuinely 90% of people go,”
Claim checkedZack Polanski says that about 90% of people he talks to on the doorstep respond positively to the Green Party's platform.
This is an anecdotal estimate of doorstep reactions; no polling or data exists to check it.
No source found. Left out of Accuracy.
Our model rated this · methodology v7Excluded from Accuracy
Not yet reviewed by a person
Partly supported65% confidence
“the party made a decision a conference two years ago that we were going to stand in every single seat.”
Claim checkedThe Green Party decided at a conference about two years ago to stand candidates in every seat.
Green Party conference voted in autumn 2023 (not two years ago) for a motion letting the party executive require local parties to select candidates, to stand a full slate across England and Wales at the next general election. The party then stood in the large majority of English and Welsh seats in 2024; the decision is real but the timing is off.
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Supported70% confidence
“now we're nearly as big as Labour.”
Claim checkedThe Green Party is now nearly as large as the Labour Party by membership.
Labour had 264,754 members in December 2025 against the Greens' roughly 230,000 in May 2026, so the Greens are about 87% of Labour's size on membership. Labour's current figure may differ after Burnham became leader.
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Not yet reviewed by a person
Can't verify50% confidence
“we have more Young Greens than the entire Liberal Democrat membership across England and Wales.”
Claim checkedThe Young Greens have more members than the entire Liberal Democrat membership across England and Wales.
The Young Greens' own figure passed 50,000 in April 2026, but the only Liberal Democrat membership figure found (about 60,000, December 2024) is dated and not a like-for-like comparison, so the comparison cannot be settled.
Our model rated this · methodology v7Excluded from Accuracy
Not yet reviewed by a person
Can't verify50% confidence
“We have 40,000 young greens just in London alone.”
Claim checkedThe Green Party has 40,000 Young Greens in London alone.
The Young Greens' national membership was reported at just over 50,000 in April 2026; no London figure was found, so 40,000 in London alone can be neither confirmed nor ruled out.
Our model rated this · methodology v7Counts in Accuracy
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Partly supported70% confidence
“They say [Jackdaw] would create jobs, but it would only create 27 jobs.”
Claim checkedThe Jackdaw gas field would create only 27 jobs, according to Polanski.
Adura's environmental impact assessment says Jackdaw needs 27 new full-time-equivalent roles for Jackdaw-specific activities, as the project is a not-permanently-attended platform tied back to the existing Shearwater hub. That figure is for ongoing operations; industry bodies cite far larger construction and supply-chain job numbers for Jackdaw and Rosebank together, so 'only 27 jobs' omits those.
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Not yet reviewed by a person
Partly supported70% confidence
“Rosebank would be the cumulative emissions of 28 of the poorest income countries all put together.”
Claim checkedThe emissions from burning Rosebank's oil would equal the cumulative emissions of the 28 poorest-income countries put together.
Analysis reported by The Conversation and campaigners says burning Rosebank's oil would release up to about 200 million tonnes of CO2, more than the combined annual emissions of 28 low-income countries. The comparison is to those countries' annual emissions, not their cumulative emissions, so 'cumulative' is imprecise.
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Partly supported65% confidence
“That decision was meant to be made this month. Magically, they've now delayed it till next month, just after the bi-election.”
Claim checkedThe government's decision on the Jackdaw and Rosebank fields was due this month and has been delayed until the month after the Holborn and St Pancras by-election.
Reports say a decision on the Jackdaw gas field was expected in September 2026 and has been pushed to late autumn, after the 8 October Holborn and St Pancras by-election; Rosebank is also awaiting a decision. Sources give 'late autumn', not a precise 'this month' to 'next month' shift, and the delay's motive is the speaker's characterisation.
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Partly supported70% confidence
“we have extracted more oil and gas across the planet than we can burn and still have a habitable planet.”
Claim checkedHumanity has extracted or identified more oil and gas worldwide than can be burned while keeping the planet habitable.
The Global Registry of Fossil Fuels (Carbon Tracker) found that known oil, gas and coal reserves would use up the 1.5C carbon budget about seven times over. That concerns reserves identified in the ground, not fuel literally already extracted, but the underlying point that existing reserves exceed what can be burned is well supported.
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Not yet reviewed by a person
Supported70% confidence
“much of the media is owned by a small group of multimillionaires and billionaires many of whom don't even live in this country”
Claim checkedMuch of the UK media is owned by a small group of multimillionaires and billionaires, many of whom do not live in the UK.
Media Reform Coalition research finds three companies (DMG Media, News UK, Reach) hold about 90% of national newspaper circulation, owned by a few wealthy proprietors, several of them based or domiciled abroad, such as Rupert Murdoch and Evgeny Lebedev's stakes. 'Many of whom don't even live in this country' is a loose but reasonable summary.
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Partly supported75% confidence
“the Labour government literally buried a report that had been written by the joint chiefs overhead of MI5, MI6 and GCHQ that talked about the fact that our whole food system is at risk of collapse and the government hid it because it was considered too scary for people. So they just buried it last October.”
Claim checkedThe Labour government withheld from October 2025 a Joint Intelligence Committee report, involving MI5, MI6 and GCHQ, warning that the UK food system is at risk of collapse.
The Joint Intelligence Committee assessment 'Global Biodiversity Loss, Ecosystem Collapse and National Security' warned the UK could struggle to maintain food security. It was due in October 2025, was reportedly held back by Downing Street as too negative, and only appeared on 21 January 2026 after a Green Alliance FOI request, in redacted form. It was a JIC assessment (not a report by the 'heads' of the agencies) and its food-system warning is conditional on ecosystem collapse.
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Supported70% confidence
“I think [Stella Creasy] put in an amendment to say political donation should be capped at £500,000. Far too much, but that was the cap. Even that was too much for the Labor government.”
Claim checkedStella Creasy put forward an amendment capping political donations at £500,000, and the Labour government did not accept it.
Labour MP Stella Creasy tabled an amendment to the Representation of the People Bill capping donations at £500,000 (falling to £100,000 the next year). The government declined to back a cap in that bill, saying it was not ruling one out later, and Creasy later withdrew the amendment after assurances of a taskforce.
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Partly supported80% confidence
“the reform have taken a 76 million pound donation.”
Claim checkedReform UK took a £76 million donation within days of the donations-cap amendment being rejected.
Reform UK received two record £36 million donations, from Ben Delo and Christopher Harborne, within about 48 hours in mid-September 2026, a combined £72 million, not £76 million.
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Not yet reviewed by a person
Supported60% confidence
“We've already extracted the vast majority of the reserves.”
Claim checkedThe UK has already extracted the vast majority of its North Sea oil and gas reserves.
Taking this as the UK North Sea, the regulator's figures show over 45 billion barrels of oil equivalent already produced from the UK Continental Shelf against roughly 2.9 billion boe of proven and probable reserves left at end-2024, so about 94% of the total has been extracted. The quote gives no context, so this reading is an assumption.
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Partly supported55% confidence
“the Green Party policies almost always come out on top.”
Claim checkedGreen Party policies almost always come out on top in policy polling and focus groups.
Polling shows some Green policies are very popular, for example YouGov found 75% support for a wealth tax on assets above £10m. No evidence was found that Green policies 'almost always' come out on top across policy polling and focus groups, or that this applies to the 'vast majority' of them.
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Not counted
1
Procedural claims (the speaker's own dates, petition counts, who said what, background), clear slips of the tongue, and words read out from someone else. They stay on the record and do not count in Accuracy.
Pending“My very first debate, literally first political event ever, was with Karma and Natalie Bennett [laughter] on either side of me, who was leader of the Green Party at the time. Interestingly as well, Natalie would often not be there at the Hustings. There was about 30 Hustings that campaign”Procedural: His own account of his first debate and the number of hustings in 2015: personal history, not a claim that backs an argument. · PoliticsJOE live event with Russell Warfield: The Green Socialist book launch, 5 Oct 2026