Ms Mattinson says her analysis was "reduced down to one bullet point in the report" produced by Margaret Beckett.

She says voters "didn't trust Labour to manage the economy" and they "categorically" blamed the party for the 2008 financial crisis.

She also says people did not see Labour leader Ed Miliband as "prime ministerial".

"If you look at every election since the '70s, what you see is that the party that has the leader with the best ratings is the party that wins. There's no exception to that," she adds.

BBC Sunday Politics

Deborah Mattinson, who carried out research to feed into Dame Margaret Beckett's report into Labour's election defeat, has spoken to the Sunday Politics.

She says her evidence was not published.

Ms Mattinson, whose research was conducted in marginal constituencies in places including Croydon, Watford, Nuneaton and Glasgow, insists she had briefed Dame Margaret before the release of her report.

"I was somewhat disappointed not to see some of that reflected back," she said. "Yes, she picked up on the economy, but there actually was no analysis. It's reduced down to one bullet point in the report."

John Pienaar
Pienaar’s Politics

Labour's former frontbencher Chuka Umunna has warned the party is "dramatically losing ethnic minority support". He tells John Pienaar the Tories have "assiduously courted" ethnic minority votes, and that people's impressions of David Cameron's party have changed.

John Pienaar
Pienaar’s Politics

Lib Dem leader Tim Farron says there is a "real sense that the UK is not engaging with the refugee crisis at all". Mr Farron wants the government to grant the wish of charities and campaigners to take in at least 3,000 unaccompanied migrant children. This morning's Observer claims David Cameron is "considering" plans to admit thousands of children "within weeks".

Image source, PA

There are plenty of pictures of Jeremy Corbyn in this morning's papers, after the Labour leader visited the Calais migrants camp.

He said conditions in the Grande-Synthe camp near Dunkirk would be a "disgrace anywhere", and Britain should be "part of bringing European support to people".

Read more

Former Communities Secretary Sir Eric Pickles tells Sky News he is "not a massive fan" of the EU, and has a lot of friends who want to leave. But he questions whether the UK would be "materially better off on the other side".

Sir Eric expands on this argument in this morning's Sun on Sunday, external.

Scotland's First Minister, Nicola Sturgeon, has said that a June EU referendum would be "disrespectful" and warned that the campaign to stay in the European Union had to be a positive one.

Sky News

Frank Field also has a warning for his party's leadership, saying Labour appears to be "walking in the opposite direction" to the public on the "big issues which will decide the next election".

Sky News

Labour MP Frank Field tells Dermot Murnaghan David Cameron's demand for a four-year freeze on EU migrants' benefits does not go far enough.

He says the UK should be able to "impose our own borders", warning unrest over migrants could "unmake" the EU.

Do MPs need greater protection from members of the public?

According to the Observer, that is the conclusion psychiatrists working with the Home Office have reached, external after a study found four out of five MPs had been victims of intrusive or aggressive behaviour. A total of 192 of the 239 MPs responded to a survey, with 36 saying they fear going out in public.

John Pienaar
Pienaar’s Politics

Pienaar's politics is live now, and it's a Nelson Mandela special. John also speaks to Labour's Chuka Umunna and the Lib Dem leader, Tim Farron. You can listen on the Live Coverage tab above.

Here's some further reading on the topics being discussed in this morning's interviews:

What is Scotland's new funding deal?

Q&A: What Britain wants for Europe

Laura Kuenssberg on Labour's analysis of its defeat

London Mayoral Candidate Zac Goldsmith, who describes himself as a "non head-banging Eurosceptic" says he expects "meaningful reform" to result from David Cameron's discussions with the EU.

Speaking to Andrew Marr, he says he can be "persuaded either way" on how to vote.

Here's more on Nicola Sturgeon's interview with Andrew Marr.

The first minister told the BBC's Andrew Marr programme the Scottish government is "busting a gut" to agree a deal before the middle of February.

Talks between the Scottish and UK governments on the fiscal framework have been ongoing for months.

Sources in the UK government have said they believe a deal is achievable.

Read the full story

The Andrew Marr Show

BBC Trust chairwoman Rona Fairhead is being interviewed about changes planned under its latest charter review.

"Everything is being looked at, nothing is off the table," she says.

"It is a tough settlement", she says adding that it is likely some stations and some programmes will be affected.

The Andrew Marr Show

How about the war of words between Ms Sturgeon's predecessor Alex Salmond and US Republican hopeful Donald Trump? Should the tycoon be banned from Scotland?

"Thankfully, that's not my decision," says the first minister, adding: "Let's just say I have every confidence that the good sense of the American people will prevail on the question of Donald Trump."

The Andrew Marr Show

There are analogies between the Scottish independence referendum and the EU referendum, says Ms Sturgeon. If the remain campaign "falls into the trap of the No campaign" she says, "I fear it will lose".

The Andrew Marr Show

It would be a "mistake" for David Cameron to hold the EU referendum in June, says Nicola Sturgeon, claiming it would be "disrespectful" to elections being held in May - including to the Scottish Parliament.