This report presents the first set of results and key findings of a comprehensive public opinion survey of 4,368 adults carried out by YouGov on behalf of Best for Britain between 5th - 10th September 2025. The reported findings provide an in-depth assessment of public attitudes towards ‘Brexit’, building on previous Best for Britain research which focused on public attitudes towards UK-EU relations and policy commitments made at the first UK-EU Summit of 19 May 2025.
The survey asked whether people viewed Brexit as a success, or a failure, and explored their motivations for thinking Brexit has been a failure. The survey also explored how views on Brexit are affecting people’s perceptions of whether the UK is headed in the right or wrong direction, and which emotions Brexit elicits from people. Throughout, we explored how views on Brexit are affecting the supporter bases of the UK’s main Westminster political parties, and how perceptions of Brexit are shaping electoral politics.
The findings suggest that despite Reform UK’s surge in popularity, the view that Brexit has been more of a failure has increased in support across the supporter bases of all main Westminster parties, compared to the views of their voters at the 2024 General Election.
When prompted, opposition to Brexit unites Labour, Liberal Democrats and Green Party supporters, drawing strong feelings of anger and frustration across the entire left-of-centre of British politics. When asked why they think Brexit has been a failure, the economy, lack of opportunities it created, and trade disruption are the most common reasons given among these groups. They are also likely to single out Brexit as the main reason the UK is headed in the wrong direction. Labour, Liberal Democrat and Green Party supporters continue to share almost identical views when it comes to Brexit, and continue to behave as a distinct pro-European voting bloc, split between three parties. Among Labour, Liberal Democrats and Green Party supporters, opposition to Brexit is a more powerful unifying force than the rise of Reform UK. Crucially for the UK Government, this is also the case among Conservative to Labour Switchers, and the small number of Labour voters now minded to back Reform UK.
Brexit no longer appears to be the focus of the Conservatives and Reform UK’s voter base. It appears far less emotive than it is to Labour, Liberal Democrat and Green supporters. Indeed, the consolidation of the UK’s remaining pro-Brexit voting bloc around Reform UK has resulted in a significant change in the Conservative Party’s supporter base, which now appears sceptical about Brexit. Conservatives are now twice as likely to say Brexit has been a failure than to say it has been a success, with more of them likely to say it has been neither, than to say it has been a success. The main reasons Conservatives cite for Brexit having been a failure are the impact it has had on the economy, and disruption to the UK’s trade with the EU. When asked about how Brexit makes them feel, Conservative supporters are likely to say they don’t know, followed by a mixture of positive and negative emotions.
The question of whether Brexit has been a success or failure splits Reform UK supporters three ways between those who think it has been a failure, those who say it has been a success, and those who think it has been neither. The most common emotion Brexit elicits among Reform UK supporters is happiness, but only slightly fewer say they ‘don’t know’, highlighting the notable amount of hesitation now present among former Leave supporters.
Headline Findings
Public attitudes towards Brexit
On average, over three in five (62%) Brits would say that Brexit has been more of a failure, compared to only one in ten (11%) who would say it has been more of a success. Respondents were also more likely to say that Brexit has been neither a failure nor a success (19%), than they are to say it has been a success (11%).
That Reform UK supporters do not have a unified view of whether Brexit has been a success or a failure is a significant finding. This is of particular importance in light of the UK Government seeking to improve relations with the EU, and ahead of any Parliamentary debate over the implementation of agreements reached between the UK and EU across numerous policy areas.
The reasons Brexit is seen as a failure
Results showed that a clear majority (57%) of voters who think Brexit has been a failure would say so because of the damage it has caused to the UK economy.
Brexit not resulting in any opportunities, such as extra funding for the NHS, was the second most cited reason, with around half of respondents who think Brexit has been a failure (49%) choosing this option. Over half of Liberal Democrat (52%), Labour (53%) and Green Party (58%) Supporters who think Brexit has been a failure cited this reason, as did 37% of Conservative Supporters who thought the same, and around a third (32%) of Reform UK Supporters who similarly think Brexit has been a failure.
Who the public blame
Unsurprisingly, Nigel Farage was overwhelmingly blamed for Brexit being a failure by Labour and Liberal Democrat Supporters who think Brexit has been a failure, with just under nine in ten (87%) saying he is to blame. They were joined by over four in five (82%) Green Party Supporters who think Brexit has been a failure, and a majority (58%) of like-minded current Conservative Supporters.
Crucially for the UK Government, Nigel Farage was blamed for Brexit having been a failure by over two thirds (68%) of Conservative to Labour Switchers who think Brexit has been a failure. The same was true for half (51%) of people who voted Labour in 2024 and are now considering voting Reform UK who also think Brexit has been a failure.
The Data
Polling and research commissioned by Best for Britain. All figures, unless otherwise stated, are from YouGov Plc.
The survey presented in this report included a total sample size of 4,368 adults. Fieldwork was undertaken between 5th - 10th September 2025. The survey was carried out online. The figures have been weighted and are representative of all GB adults (aged 18+).