Keir Starmer faces mounting resignation calls as rival Andy Burnham returns to Parliament

The pressure builds

Sir Keir Starmer could announce his resignation as early as Monday, according to reports in The Guardian and The Observer. The prime minister is facing a revolt from Labour MPs after the party's heavy losses at May's local elections, which were the worst result for a governing party in three decades. More than 100 Labour MPs (roughly a quarter of the parliamentary party) have publicly called for Starmer to resign or set a timetable for his departure, and senior cabinet figures, including Foreign Secretary Yvette Cooper, have reportedly urged him to go.

Starmer spent the weekend at his country residence, Chequers, with his family. His only public post on Sunday was a Father's Day message, calling fatherhood his greatest joy. The prime minister has repeatedly said he intends to stay and fight any leadership contest, but his closest allies are no longer ruling out an exit. Business Secretary Peter Kyle told Sky News that Starmer was taking time to think through the "political realities and challenges" and the "opportunities that lie ahead."

Burnham returns to Westminster

Andy Burnham, the former mayor of Greater Manchester and the UK's most popular politician, won the Makerfield by-election on Thursday, securing a seat in the House of Commons. The 56-year-old Liverpudlian had previously served as an MP from 2001 to 2017 and is widely seen as the only figure capable of uniting the party. Burnham is now eligible to challenge Starmer for the Labour leadership, and by extension the premiership. If Starmer does not step aside voluntarily, Burnham is expected to trigger a formal leadership contest.

Burnham presents himself as an optimistic, plain-speaking champion of local industry. His candidacy has been welcomed by those Labour MPs who believe the party needs a more energetic and relatable leader.

Trump weighs in

US President Donald Trump inserted himself into the UK's political drama on Sunday, posting on Truth Social that Starmer "will resign as Prime Minister of the United Kingdom". Trump accused Starmer of failing on immigration and energy, adding that Britain should "OPEN NORTH SEA OIL". The post drew no distinction between media speculation and confirmed fact.

“Keir Starmer has disastrously failed on two very important subjects – IMMIGRATION AND ENERGY (NORTH SEA OIL!) I wish him all the best.”

The intervention comes after months of tension over Starmer's refusal to allow the US to use British military bases for initial strikes on Iran. Trump's remarks, while reflecting his own grievances, added to the perception at Westminster that Starmer's position has become untenable.

What comes next

The Guardian reported on Sunday that Starmer is expected to announce his departure after "enormous pressure" from Labour MPs to make way for Burnham. The Observer, citing party sources, said Starmer would present a timeline for his exit. The Sunday Telegraph reported that allies of the PM say he is "ready" to go. Downing Street, however, stated on Saturday evening that Starmer's position had not changed since he vowed to fight on. A clear statement is expected early in the week, but the consensus in Westminster is that Starmer cannot long survive the loss of his parliamentary party's confidence.