A businessman says he is considering moving his business to the continent if Britain leaves the EU.

UKIP leader Nigel Farage warns Europe and Britain "need to be sensible and careful" about who they let in, following a bomb plot in Dusseldorf.

Times columnist Oliver Kamm argues imposing language requirements on immigrants makes life more difficult for them, rather than easier. Speaking to Giles Dilnot for the Westminster Hour, he said it had "never been part of the British tradition" and should not be pursued by any "liberal, tolerant, cosmopolitan society".

A supporter of leaving the EU admits it could cause short-term troubles but claimed it would eventually be worth it.

MP Jacob Rees-Mogg described David Cameron's renegotiation of the EU deal as "hopeless" in a debate about the forthcoming referendum.

A British diplomat has suggested visa-free travel for some Turkish nationals should be extended to the UK, documents obtained by the Sunday Times show.

Here's a round-up of the day's big developments in the EU referendum campaign:

• David Cameron told Andrew Marr the UK's "economy would be smaller" if it left the single market - and the government might not be able to protect public spending in areas like pensions
• UKIP's Nigel Farage told the same programme that voters have "had enough of being threatened" by the prime minister and chancellor
• Labour's John McDonnell said the combination of an exit from the EU and a Conservative government would be "disastrous" for working people
• Labour MP John Mann, who backs leaving the EU, told the Sunday Poltics that his party was "not in touch" with Labour voters
• A British diplomat suggested visa-free travel for some Turkish nationals should be extended to the UK, according to documents leaked to the Sunday Times

The Institute for Fiscal Studies says that claims about it by UKIP leader Nigel Farage are "untrue".

Speaking to Andrew Marr earlier, Mr Farage questioned the neutrality of organisations like the IFS, saying that three quarters of its funding came from the UK government and the European Union.

In a blog on its website,, external the organisation said: "We are an independent charitable organisation and do not in any sense 'work for' the UK government."

Conservative, Labour and SNP politicians are among those tweeting about Saturday's mass shooting in a gay nightclub in Orlando.

In the past few days, voters have been warned that leaving the European Union would have severe effects for different areas of public spending.

The Sunday Times

Image source, Conservative Party

Andrew Mitchell, one of the few Conservative MPs yet to say which way he will vote in the EU referendum, has come down on the side of Remain - but admitted he felt "queasy" about what he described as the British establishment's lining up behind a Remain vote.

The former international development secretary and chief whip told the Sunday Times, external that "for all the romance and pluckiness there is something of the past about arguments for leaving the EU". 

His experience in government and his understanding of the economic forces shaping the world led him to the conclusion that the future lay in "deeper international co-operation". 

However, Mr Mitchell urged the Remain side to refrain from personal attacks on their opponents, singling out Energy Secretary Amber Rudd for criticism following her questioning of Boris Johnson's motives for backing Brexit in last week's ITV debate.

Former Conservative leader Michael Howard says he knows of a case in 2005 when the then home secretary wished to refuse entry to a French citizen known to be involved in terrorism.

However, Lord Howard claims, the home secretary was overruled by the European Court of Justice.

Lord Howard - a Leave campaigner and a former Conservative home secretary - made the comments during a BBC South East EU referendum debate in Dover.

A vote for the UK to leave the European Union would be "an act of wanton destruction" of Northern Ireland's economic viability, a former head of the World Trade Organisation says.

Esther Webber
BBC News

This year's EU referendum has spawned a plethora of campaign groups for and against Brexit - but in 1975 there was a third camp, the "don't knows".

Farel Bradbury, a design engineer from Ross-on-Wye, founded the small but lively Don't Know Campaign after a conversation with a friend in which they discovered neither of them had read the Treaty of Rome, which paved the way for the European Economic Community (EEC).

He decided to print up a leaflet which asked signatories to confirm they had not read the Treaty of Rome and that they paid taxes to government for these matters to be decided on their behalf.

The campaign was run by Mr Bradbury and six other intrepid volunteers, who printed pamphlets and posters bearing slogans such as "pass the buck back to Westminster - where it belongs".

Read more.

Poet Benjamin Zephaniah says he's being "battered by scaremongering" on both sides of the EU discussion.

He was speaking during a BBC debate about the forthcoming EU referendum filmed at the University of Lincoln.

"I'm a neutral, but I'm being battered on both sides by half-truths, lies and scaremongering," he said.

Also on the panel, to be aired on Sunday, were UKIP MEP Jane Collins for Leave, Labour MP Melanie Onn for Remain, and journalist Robin Limb.

Read more.

Labour MP John Mann has said the EU is "fundamentally broken", adding that he asked himself if it could be "reformed from the inside" and concluded that it could not.

Speaking on Sunday Politics, he was joined by fellow MP Khalid Mahmood, who had supported Leave but has decided to campaign for Remain.

He called for engagement with the EU and argued that member states need to support each other on immigration and "work together in terms of restricting borders".

Reality Check

The claim: The pound and the FTSE 100 are at the same levels as they were in March.

Reality Check verdict: Nigel Farage is right about the levels compared with March, but looking a few months further back and considering options markets may give a more useful view of concerns on the currency markets about the risks of a Brexit.

Read the full Reality Check here.

BBC London talks to residents, business leaders and experts on how they will vote in the EU referendum.