A poll giving the campaign to get Britain out of the EU a 10-point lead sparked panic in the Remain campaign yesterday.

With less than a fortnight to go until the June 23 referendum, the ORB poll put support for Brexit up four percentage points on 55 per cent, with backing for Remain down four on 45 per cent.

It came amid mounting panic in No 10 and Labour’s high command that traditional Labour voters are backing Brexit because of anger over mass immigration from the EU.

The survey of 2,000 people found the Leave campaign is winning on 55 per cent, compared with 45 per cent of voters who believe the UK should stay in the EU

The online poll of 2,000 people for the Independent found that Tory voters back Brexit by a margin of 62 to 38, despite dire warnings from David Cameron and George Osborne about the potential impact.

But, ominously for the Remain camp, 44 per cent of Labour voters also said they backed Brexit, compared with 56 per cent who want to stay in the EU – a far closer margin than expected.

The results chime with reports from MPs and grassroots campaigners across the country that large swathes of Labour’s traditional support is backing Brexit. Mr Cameron yesterday admitted he is ‘very concerned’ about the referendum’s outcome.

43,000 GET VOTE AFTER THE DEADLINE Almost 500,000 people registered to vote in the referendum after the deadline was extended by 48 hours. Downing Street said 1.5million signed up to vote in the last week, including 433,695 who applied after the original deadline of midnight on Tuesday. Millionaire Brexit campaigner Arron Banks has threatened legal action over the decision – accusing ministers of trying to gerrymander the result. In an unusual move, David Cameron allowed emergency legislation to extend the deadline to midnight on Thursday after the Cabinet Office computer system crashed on Monday following a surge in applications. But the scale of the extra registrations – almost ten times those thought to be trying to get through when the system crashed – will fuel concerns. Mr Banks, from Leave.EU, accused the Government of trying to ‘load the dice’ for Remain, claiming the extra time let the In campaign sign up more young people, who are thought to be more likely to back EU membership. But No10 said there was no way the Government could know the voting intentions of those registering. Advertisement

The poll appears to have put David Cameron (pictured taking part in a Q&A with voters this evening) into full panic mode as he admitted tonight: 'I've got a lot more people to convince'

Audience member Yasmin (pictured left) said she was on the same side of the EU debate as David Cameron (pictured right) but said it was 'nothing to do with' him, adding: 'I hate the Tories' and branding him 'Dodgy Dave' straight to his face

IS EDDIE IZZARD BREXIT'S BIGGEST ASSET? Eddie Izzard was heckled and told to ‘shut up’ by a Question Time audience after he attacked Nigel Farage over his ‘immigrant family’. Sporting a pink beret and EU badge for the BBC show, filmed in Kent, the cross-dressing comedian told the Ukip leader – who has French ancestors and a German wife – that he should vote to remain. Eddie Izzard was heckled and told to ‘shut up’ by a Question Time audience after he attacked Nigel Farage over his ‘immigrant family’ Advertisement

The Prime Minister said it was ‘very competitive’, with many voters still genuinely undecided about how they will cast their ballot.

PANICKED LABOUR AT WAR OVER THE EU Jeremy Corbyn (pictured with deputy Labour leader Tom Watson) was warned the party risks losing a million votes to Ukip in the next general election because of the party's official support for EU membership Infighting broke out in the Labour party today as two senior MPs declared they are backing Brexit and Jeremy Corbyn was warned he'll lose out to Ukip if he ignores voters' concerns on immigration. Labour MPs John Mann and Dennis Skinner - who both represent working class heartlands - announced they will vote leave in the June 23 referendum, taking the number of Labour MPs backing Brexit to 12. Mr Mann, MP for Bassetlaw, said Labour voters 'fundamentally disagree' with the party's official position to remain in the EU because they were suffering the consequences of the influx of EU migration on public services and viewed the EU as 'undemocratic' and 'broken'. Even pro-EU Labour MPs are expressing concern over the party's position, with shadow home secretary Andy Burnham criticising Mr Corbyn for failing to appeal to traditional Labour voters. 'We have definitely been far too much Hampstead and not enough Hull in recent times and we need to change that,' he told the BBC. And in comments that will shock some in the party, he added: 'Here we are two weeks away from the very real prospect that Britain will vote for isolation.' Pro-Remain Labour Dudley MP Ian Austin: 'There's no point people in north London lecturing people in places like Dudley about the benefits of immigration without listening to their real and legitimate concerns about this issue and coming up with fair and reasonable answers to address it.' Mr Corbyn was also warned that he risks losing a million votes to Ukip in the next general election because of the party's official support for EU membership. The pro-Brexit former Labour minister Frank Field said Labour should be encouraging its supporters to vote 'as they believe is in the best interests of our country' instead of taking a pro-EU stance which risks driving them into the arms of Ukip. Advertisement

The poll came as Labour was plunged into infighting over Brexit yesterday, with MPs warning that the party leadership was out of touch with voters’ concerns about mass immigration.

The party’s high command attempted another relaunch of its faltering campaign to keep Britain in the EU.

Deputy leader Tom Watson said Labour was ‘as united as we can be’ in backing Brussels, with the entire Shadow Cabinet supporting continued EU membership.

But veteran Left-winger Dennis Skinner revealed he is backing Brexit, partly because of concerns about the ‘undermining’ of wages by migrant workers.

Former Labour social security minister Frank Field warned that the party could lose another million voters to Ukip unless it started to take seriously concerns about immigration.

And leading Labour MP John Mann savaged the party leadership over its failure to address concerns about immigration.

Yesterday, the Daily Mail revealed that Labour’s main referendum leaflet does not even mention the word immigration, despite it being one of the central issues in the EU debate.

Mr Mann said: ‘People have been terrified about talking about immigration. But on polling day they are going to get a big shock across the country.

'They are going to get a big shock about how Labour councillors vote, they will get a big shock about how Labour members vote.’

Mr Mann, a member of the Commons Treasury committee, said he now favoured Brexit because the country had ‘one hand tied behind our back’ when it came to controlling immigration in the EU.

‘It is not that Labour is not getting its message across to Labour voters,’ he said.

‘It’s that Labour voters are fundamentally disagreeing on this issue. ‘I don’t want to live in a country with 80-90million people living in it.

‘I don’t want everything to be one big city. And the only way you can deal with that is by controlling borders.’

Senior Labour figures yesterday attempted to sidestep questions about immigration.

Speaking at the second relaunch of the party’s campaign to keep Britain in the EU, former Cabinet minister Yvette Cooper acknowledged that voters are ‘worried’ about immigration but said it should not be the focus of the referendum debate.

Shadow Home Secretary Andy Burnham also issued a warning, saying the Remain campaign is facing the ‘very real prospect’ of defeat.

Mr Burnham took a swipe at the party leadership over the tone of its campaign.

‘We have definitely been far too much Hampstead and not enough Hull in recent times, and we need to change that,’ he said.

‘Here we are, two weeks away from the very real prospect that Britain will vote for isolation.’

PM BACKS 'STAR' MINISTER WHO SMEARED BORIS By Jack Doyle, Political Correspondent for the Daily Mail David Cameron was last night accused of sanctioning a ‘desperate smear’ on Boris Johnson’s character. In a referendum television debate on Thursday night, Tory Energy Secretary Amber Rudd launched an innuendo-laden attack on the former London mayor. In her closing remarks to ITV, she declared: ‘Boris is the life and soul of the party but he’s not the man you want driving you home at the end of the evening.’ In a referendum television debate on Thursday night, Tory Energy Secretary Amber Rudd (pictured) launched an innuendo-laden attack on Boris Johnson Members of the studio audience appeared stunned by the ferocity of the character attack and some hissed at Miss Rudd. Leave campaigners speculated that the attacks had been orchestrated by No10, which has been rattled by recent polls showing the contest is neck and neck. And yesterday the Prime Minister dismissed criticism of Miss Rudd’s attack on Mr Johnson. He was asked during a Facebook/Buzzfeed debate if he ‘felt sorry’ for Boris Johnson. But he made clear he was happy with Miss Rudd’s remarks. ‘They are lively affairs and that’s the way it is,’ he said. It marked a high point of viciousness between leading Tories and made a mockery of Mr Cameron’s pledge not to engage in ‘blue on blue’ attacks. In a message posted on Twitter after the debate, the Prime Minister praised Miss Rudd’s performance, writing: ‘Amber Rudd was a star in the ITV debate. She was passionate and clear about why we are StrongerIn the EU, “leading not leaving”.’ The message, sent shortly after the debate, was seen by Leave campaigners as an explicit endorsement of Miss Rudd’s assault. Pro-Brexit Tory MP Andrew Bridgen said the attack was ‘undoubtedly’ sanctioned by No10. ‘The desperate Remain campaign are now resorting to personal attacks and smears because they have actually lost the argument,’ he said. ‘I’m very proud that the British people are not being cowed by Project Fear.’ On social media, viewers accused Miss Rudd of making ‘cheap jibes’ against the former London mayor over stories in the past about his womanising and extra-marital affairs. Miss Rudd’s brother, PR man Roland Rudd, is a leading figure in the Remain campaign and campaigned to get Britain into the euro. The debate saw a series of orchestrated personal attacks on Mr Johnson. Miss Rudd claimed he was only campaigning for Brexit to further his leadership ambitions. Asked about immigration she said ‘we need to look at the numbers’ of migrants, before adding: ‘I fear the only number that Boris is interested in is the Number 10.’ In the Facebook/Buzzfeed debate yesterday, Mr Cameron also indicated that he would still give Mr Johnson a Cabinet job after the referendum. Advertisement

'You've f***ed everything up in this country, Dodgy Dave': A rattled David Cameron faces angry voters over EU campaign

David Cameron was told he had 'f***ed every f***ing thing up in this country' as he faced angry voters in a live EU debate tonight.

Audience member Yasmin said she was on the same side of the EU debate as the Prime Minister but said it was 'nothing to do with' him, adding: 'I hate the Tories' and branding him 'Dodgy Dave' straight to his face.

In a sign of panic a rattled Mr Cameron admitted to the audience: 'I've got a lot more people to convince I can see.'

David Cameron was told he had 'f***ed every f***ing thing up in this country' as he faced angry voters in a live EU debate tonight

The increasing panic in the Remain camp was exposed last night as Energy Secretary Amber Rudd delivered a savage attack on her Tory colleague Boris Johnson, branding him a liar obsessed with becoming PM.

She even jibed that he was 'not the man you want to drive you home at the end of the evening'.

This evening Mr Cameron defended the ferocious blue-on-blue attack, saying: ‘I’ve done these debates – they’re lively debates and that’s the way it is.'

Mr Cameron was also forced to defend his refusal to take part in any head-to-head TV debates with his Brexit rivals, insisting he did not want the EU campaign turned into a 'Dave versus Boris show'.

During a 45-minute Q&A with Buzzfeed and Facebook users, Mr Cameron came under fire from all sides of the EU debate - criticised by Remain supporters for 'scaremongering' people into voting for Britain to stay in the EU.

During a 45-minute Q&A with Buzzfeed and Facebook users, David Cameron (pictured centre) came under fire from all sides of the EU debate

David Cameron (pictured left with his wife Samantha at the Queen's 90th birthday celebrations at St Paul's Cathedral this morning and right, answering questions at the Buzzfeed and Facebook Q&A this evening) said he will 'spend all my time' ahead of the June 23 poll trying to convince voters to back staying in the EU

Audience member Yasmin told him: 'I'm voting Remain, but [it's] nothing to do with guys, I hate the Tories, I'm just going to say you've f***ed every f***ing thing up in this country, you've screwed students, you've screwed the disabled, the vulnerable.

'Seriously, I've heard you want to take back the Human Rights Act and everything as well and I wouldn't put that past you at all. Dodgy Dave.'

She added: 'I just don't want to give any more power to the Tories because that would be the worst thing right now.'

A stunned Mr Cameron replied: 'That's the great thing about this debate: You can have a ferocious argument with someone about health policy or education policy or human rights policy but this issue of whether we stay in or get out of the European Union actually transcends these issues.

'So I would argue that one of the strengths of the side of the argument that Yasmin and I are on is we've got the Labour party, a Conservative government, the Lib Dems, the Greens, the trade unions.

David Cameron attempted to put on a positive and passionate performance as he tried to convince voters to back staying in the EU tonight

David Cameron endorsed Amber Rudd's very personal attacks on Boris Johnson in the debate last night

'We argue with each other - we've got a lot of differences - but on this issue we have the broadest possible coalition saying it's better and stronger staying in.'

Last night Ms Rudd targeted an extraordinary personal attack on her Tory colleague Mr Johnson in one of the most brutal TV clashes yet of the campaign.

In an apparent reference to the ex-Mayor's tumultuous love life, she said: 'Boris, he's the life and soul of the party.

'But he's not the man you want to drive you home at the end of the evening.'

She also took a swipe at his personal ambitions to become Prime Minister, telling viewers: 'I fear that the only number Boris is interested in is Number 10.'

The vicious assaults - which provoked a storm of protest on Twitter and were dismissed as 'playground' tactics by Mr Johnson's aides - came during a six-strong primetime ITV debate that saw the battle catch fire.

But they were endorsed by Mr Cameron on Twitter last night and this evening he said: ‘I’ve done these debates – they’re lively debates and that’s the way it is.'