The UK faces an extra £2.4bn bill from Brussels if it remains part of the EU, Boris Johnson says
David Cameron warns an EU exit could push up mortgage rates
Leave campaigners say the UK could be pushed into future eurozone bailouts if it stays in the EU
Former PM Sir John Major attacks the "squalid" and "deceitful" campaign to get the UK out of the EU
The Andrew Marr Show
Andrew Marr speaks to former PM Tony Blair.
Former Labour Prime Minister Tony Blair says leaving the EU would create "an enormous economic problem".
ITV
Leave campaigner and former Conservative cabinet minister Iain Duncan Smith has said he is not in favour of David Cameron being replaced as prime minister - amid Tory infighting over the EU referendum.
Speaking on ITV's Peston on Sunday, Mr Duncan Smith said he intended to remain loyal to David Cameron and "what colleagues do is up to them". He added:
Quote MessageI have one simple view - we have waited for this referendum for a long time. Right now, the real debate is about who shall govern the UK."
Speaking on Sky News, Trevor Philips said black and ethnic minority (BAME) voters were more likely to vote to Remain in the EU because they are "intuitively more global in their outlook".
The former Equalities and Human Rights Commission boss said most Leave campaigners are "not that keen on immigrants, or immigration should I say", and so will not appeal to BAME voters.
He said the UK has a lot of migrants because of its vibrant economy and that a lot of workers were needed, particularly in public services.
He said it did add to pressure on those services but that the way to solve it was through investment and training for UK workers.
Conservative backbencher and Leave campaigner Nadine Dorries has confirmed that she has already sent a letter to the Chairman of the 1922 Committee, Graham Brady, for a vote of no confidence in the PM if the Remain campaign doesn't win by a significant margin.
Speaking on Peston on Sunday, Ms Dorries said a form of words was circulating and that other Tory MPs had signed letters.
She accused David Cameron of having "lied profoundly" during the campaign, not least about whether Turkey was going to join the EU.
She said to deny that it was going to happen was an example of the"outright lies" that were being told.
She added that "trust has been absolutely shattered in both David Cameron and George Osborne" and that she didn't think either of them had a future after the referendum.
John Pienaar
Pienaar’s Politics
Nigel Evans now faces some quick-fire questions from John Pienaar, one of which is whether he feels like he could cry over the state of his party at the moment.
"Sometimes," he replies.
John Pienaar
Pienaar’s Politics
Commenting on the state of the Conservative Party, MP Nigel Evans congratulates David Cameron for calling an EU referendum.
But the Ribble Valley MP adds that now purdah has begun - which restricts government activity in the referendum campaign - the PM has an "opportunity" to reflect on the fact that "half" of his MPs and the grassroots membership are opposed to staying in the EU.
Quote MessageIt would be nice if that could be reflected in between the calls of armageddon, recession and World War Three."
On a potential leadership challenge, Mr Evans says he doesn't think it's going to happen.
But he adds: "We do feel badly let down," - citing the failure to meet the immigration pledge.
BBC Radio 4
Leave campaigners Boris Johnson and Michael Gove have said David Cameron must accept the failure of the government's manifesto pledge to reduce migration to the UK.
Commenting on that, Graham Brady, chairman of the 1922 committee of Conservative MPs, told BBC Radio 4's Broadcasting House:
Quote MessageIt's unfortunate in two ways. We do have a very big priority which is after the referendum is over we need to make sure we pull together, we get on with the job of governing whatever the outcome in the referendum. But the other reason why I think it's unfortunate... we really should be talking about the substantive issues about our democracy."
He said he was "very, very keen that colleagues on both sides" of the EU referendum debate engage "as respectfully as possible".
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Lack of unity on the EU, UK government challenges and UKIP all contributed to the Welsh Conservatives losing seats at the assembly elections, leader Andrew RT Davies has said.
He has spoken for the first time about why he feels they lost ground at the election.
The Tories lost three seats and Plaid Cymru became the main opposition to Labour, who fell short of a majority.
Mr Davies said his vision for a "one nation Conservative Wales" has been put "on hold for another five years".
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John Pienaar
Pienaar’s Politics
What happens if the UK votes to Remain in the EU on 23 June? Chris Grayling says there'll be continued "uncontrolled migration" which, he adds, will mean ongoing pressure on public services.
He says voters would have to accept that it would not be possible to have "a managed migration system".
Mr Grayling also defends Vote Leave's claim that EU membership costs the UK £350m a day - after the UK statistics chief said it was misleading.
"It's our gross contribution according to the Office for National Statistics," he says, even pointing out it's on table 9.9 in one of its reports
John Pienaar
Pienaar’s Politics
On Pienaar's Politics, cabinet minister Chris Grayling - one of a handful who are campaigning for an EU exit - plays down splits in the party over the referendum.
He says the relationship between MPs has remained "perfectly amicable" in the corridors of Westminster.
"I have not experienced acrimony" between the two camps, he says, and adds that he does not believe the party "wants to do anything else but unite" after the vote on 23 June.
Sky News
Steve Baker, who is campaigning to leave the EU, says the letter from Michael Gove and Boris Johnson is not "going after" David Cameron and that they're just talking about the issue.
He says:
Quote MessageIt's the handling of the issue, it's not directed at him personally."
Mr Baker adds that dealing with migration was a manifesto pledge but it can't be achieved while the UK is in the EU - and that promising to do things which can't be done will corrode trust in politics.
But he insists the party will be able to come together after the referendum. He says he is "quite confident this can all be rescued".
Asked about Andrew Bridgen's suggestion that the PM could face a vote of no confidence, Mr Baker says there's no doubt some colleagues are "very upset" and "of course he has a point".
John Pienaar
Pienaar’s Politics
Chris Grayling says that a vote to Remain in the UK means the government - now and in the future - cannot restrict the number of people who come to the UK.
Asked whether the government should abandon its manifesto pledge to reduce migration levels below 100,000 - as Michael Gove and Boris Johnson are calling for - he seems to distance himself from his Leave colleagues.
Quote MessageIt's not a question of dropping the pledge. It's what happens on the 23rd June."
John Pienaar
Pienaar’s Politics
Listening to that interview, Commons leader and Leave campaigner Chris Grayling says Andrew Bridgen is a "valued colleague", but he disagrees with his analysis of the party.
He says 12 months has passed since the general election and the government has delivered "a comprehensive programme".
Tory MPs "are not gunning for an early election", he adds.
And in attack on Labour, he says that if ever there was a unifying factor for the Conservative Party it's the prospect of a Jeremy Corbyn government.
John Pienaar
Pienaar’s Politics
Conservative MP Andrew Bridgen tells Pienaar's Politics that he believes it "highly likely" at least 50 Tory MPs would sign demands for a vote of no confidence in the PM if the campaign goes on as it has.
He says the party is very "fractured" over the EU referendum and he, noting the party's small majority, says there's a risk of a "zombie government".
He suggests there should be an early general election, before Christmas, to get a new mandate.
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