Turning to the EU referendum, David Cameron warns that a vote to leave could lead to trade tariffs of 13% on Scottish salmon, 40% on lamb - and up to 70% on "some beef products". He says those advocating EU exit "need to look farmers in the eye" and explain what it will mean in practice. 

David Cameron is speaking at the Scottish Conservative and Unionist Party conference in Edinburgh. He pays tribute to the Scottish Tory team, including leader Ruth Davidson, who he describes as "a Sturgeon-slaying, Dugdale-defying, absolute star". The Conservatives are "the only party of the union" representing people who voted No in the independence referendum, he says.

The widow of former Labour MP Harry Harpham has been chosen to fight the Westminster by-election triggered by his death from cancer last month. 

Gill Furniss was selected to contest the Sheffield Brightside and Hillsborough seat by local party members at a meeting in the constituency yesterday.

The long-serving city councillor told the Press Association her selection so soon after she lost her husband was "bitter-sweet" but said she was determined to carry on his work for jobs and investment in the South Yorkshire city. 

Former miner Mr Harpham died just nine months after being elected in the 2015 general election to a seat formerly held by David Blunkett.

Labour had a comfortable majority of 13,807 in the seat in the 2015 general election. A date for the by-election has yet to be set. 

Harry Shearer, a voice of TV's The Simpsons, looks at fairness in Hollywood after the debate over race at the 2016 Oscars.

He also spoke about celebrity status in the US presidential election, when he joined Andrew Neil, Alan Johnson and Esther McVey on This Week.

Scottish Conservative leader Ruth Davidson says that current tensions over EU membership will not lead to splits within her party.

Former defence secretary Dr Liam Fox says the UK will be better off out of the European Union.

Owen Jones looks at the figures for migration and refugees as more people head across Europe to the UK.

He claimed that some shipping containers were being converted into trendy shops and cafes and shops, while the so-called Calais Jungle was being razed to the ground and replaced with containers that are "a lot less inviting".

In a personal film for this week, the Guardian commentator said: "I went to the camps in Calais and the people I met, they were just like us."

UKIP MP Douglas Carswell has responded to criticism of him by his leader Nigel Farage, who is backing a different anti-EU campaign group. 

The Huffington Post

Image source, PA

News this morning of a new attack , externalby UKIP leader Nigel Farage on his only MP, Douglas Carswell. The pair are backing rival Leave campaigns in the EU referendum.

According to HuffPost, when asked about Mr Carswell's decision to back Vote Leave, Mr Farage said:

Scotland's Conservative Party leader Ruth Davidson believes a tax cut in Scotland is possible when the nation can afford it.

Downing Street has responded to criticism from Work and Pensions Secretary Iain Duncan Smith, who has accused those making the case for staying in the EU of smears and scaremongering. "It's important to explain what leaving the EU means to the British people", a spokesman said. 

There's plenty of EU referendum talk in this morning's front pages, following comments by France's finance minister about the future of border checks at Calais if the UK votes to leave. Browse the headlines and read a review of the papers here.

LBC

Iain Duncan Smith refrained from mentioning David Cameron personally when he attacked the arguments of the Remain in EU camp but Nigel Farage, unsurprisingly, has not been so guarded.

The UKIP leader has accused the prime minister of presenting an "apocalyptic vision" of what life would be like outside the EU. He told LBC Radio: 

Nick Eardley
BBC Scotland Westminster correspondent

Former defence secretary Liam Fox said there would be "anger" if England voted to leave the EU but the UK as a whole opts to stay.

He told a fringe meeting at the Scottish Conservative conference in Edinburgh that the decision was correctly being taken UK-wide.

However, Dr Fox admitted there would be strain on the relationship between Scotland and England if the former voted to stay and the latter to leave in the 23 June vote.

Image source, Getty Images

But he said there was no desire from politicians south of the border to end the union as a result.

Dr Fox also accused the pro-remain side of running a "project fear" campaign. 

The UK's EU referendum: All you need to know

LBC

The UKIP leader says he is hoping to meet Boris Johnson soon to discuss their shared backing for leaving the EU. Mr Farage suggests the Mayor of London was a "bit wobbly" to begin after declaring his hand when he flirted with the idea of a second referendum but was now "making all the right arguments". Mr Johnson, he adds, is one of the few "genuinely recognisable" politicians in Britain and is likely to have "real influence" over how Conservatives in London and the Home Counties end up voting. 

LBC

Image source, LBC

UKIP leader Nigel Farage says he fears the government could just "ignore" a vote to leave the EU and embark on a fresh round of negotiations about the UK's membership. Speaking on his regular LBC phone-in, Mr Farage said such was his mistrust of Westminster politicians that he couldn't be sure they would "carry out the will" of the people if they voted to leave the EU on 23 June. He says there would be a temptation for them to renew talks in search of a better deal which could then be the subject of a second referendum.