Sir Keir Starmer entered a fraught cabinet meeting after senior ministers joined a wave of dissent from Labour backbenchers. Allies described the atmosphere as "pretty ugly" and hinted the party could oust its leader. A minister close to the prime minister called the situation "absolutely barking mad," underscoring how quickly internal support is eroding.

Last week, Starmer delivered a "reset" speech to halt a slide after disastrous election results, yet more than 70 Labour MPs signed a letter demanding his resignation or a clear exit plan. Four ministerial aides, including allies of health secretary Wes Streeting, quit in protest. Home Secretary Shabana Mahmood and Foreign Secretary Yvette Cooper have pressed the prime minister to set an orderly timetable.

Facing a decisive cabinet showdown, Starmer has pledged to fight on, but insiders say the tide of opinion within Labour is turning irrevocably. The forthcoming response will likely determine whether the prime minister can retain his grip on power or be forced to step aside amid an unprecedented revolt.