A new tranche of files have been released today relating to the appointment of disgraced peer Lord Mandelson as US ambassador. But what do they include, and how embarrassing are they for Keir Starmer and his government?

Tom Bradby and Robert Peston discuss what’s included in the documents - from private messages between senior Labour figures, to Mandelson telling David Lammy that the government would "never regret" his appointment as ambassador, and Pat McFadden’s criticism of the PM.

Mandelson has said he regrets his relationship with Jeffrey Epstein, denies criminality, and says his priority is to cooperate with the police and clear his name.

Tom and Robert are joined by ITV News Investigations Editor Daniel Hewitt following his exclusive interview with Greater Manchester Mayor Andy Burnham.

Burnham is hoping to return to Westminster by winning the Makerfield by-election - a move already fuelling excitement among his supporters that he could become Labour leader, and even Prime Minister, by the summer.

Meanwhile, the Prime Minister’s other main challenger, former Health Secretary Wes Streeting, has confirmed he would stand in any future leadership contest. He’s also thrown his weight behind rejoining the EU, putting Brexit firmly back on the political agenda.

With Nigel Farage’s Reform UK surging in the local elections, would changing leader prove Labour has completely "lost its mind", or could this finally be Burnham’s moment?

Keir Starmer is battling to stay in post and after a pivotal cabinet meeting, Tom and Robert are in Downing Street to gauge the mood of ministers.

All eyes are now on his main challenger threat, Wes Streeting. With his backers already making moves to oust the PM - will the Health Secretary act?

Meanwhile, with Andy Burnham seen on a train to London, will he take the risk of mounting a leaderhip challenge, despite the Mayor of Greater Manchester not having a seat in Parliament?