Sir Keir Starmer and Lord Mandelson appear on most of the front pages. However they were published before it emerged that Sir Olly Robbins was leaving his job.

The Daily Telegraph reports that staff at Number 10 believe they were lied to by the Foreign Office, about the peer failing his enhanced security vetting. According to the i Paper, the prime minister only found out as officials were compiling documents to release to Parliament. Someone close to Sir Keir Starmer tells the Financial Times it's "inconceivable" he would have gone ahead with the appointment, if had he known.

The Daily Express leads on the calls by opposition parties for the prime minister to quit, over claims he misled Parliament when he said all due process had been followed. The Guardian, whose reporting broke this story, says Sir Keir will also be pressed about misleading the public. The paper is among several to highlight that he told journalists in February that the security vetting process had cleared Lord Mandelson for the role – a statement that contradicts the application's outcome, the Guardian says.

The Daily Mail says the push-back by Downing Street amounts to a "last-ditch" effort to keep Sir Keir in his job. On the topic of a leadership challenge, a source involved in previous moves against the prime minister tells the Times: "It's on." The leader column in the Daily Telegraph says questions around Sir Keir's future had looked to have been postponed until after the May elections, but the paper says he may have that luxury no longer.

The Daily Mirror leads instead on Vladimir Putin, saying the Russian leader has drawn up a list of four locations in the UK that he could target for backing Ukraine's war effort. Production sites in 11 other European countries are mentioned on a statement from the Russian ministry of defence. The Mirror's main editorial says this is intimidation "pure and simple" and the UK should "not flinch now".

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