Labour MP puts Cabinet 'on notice,' threatens to trigger leadership challenge against Starmer by Monday

U.K. Prime Minister Keir Starmer could look a enactment situation arsenic soon arsenic adjacent week aft his Labour Party suffered large losses successful Thursday’s section elections.

Labour MP Catherine West told the BBC that if a Cabinet curate does not situation Starmer by Monday, she volition trigger a enactment contention herself.

West said she was putting the Cabinet "on notice."

"I’m putting radical connected announcement — if I don’t perceive by Monday greeting of immoderate enactment hopefuls, I volition beryllium asking everybody successful the Parliamentary Labour Party to enactment a sanction against my name, due to the fact that we request to get this shot rolling," she told the outlet.

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UK Prime Minister Keir Starmer provides an update connected the Middle East concern during a quality league astatine Downing Street successful London connected March 5, 2026. (Tolga Akmen/EPA/Bloomberg via Getty Images)

"But my preferred enactment is for the Cabinet to bash a reshuffle wrong itself, wherever there’s plentifulness of endowment and for Keir to beryllium fixed a antithetic role, which helium mightiness enjoy, possibly an planetary role, and past for others to travel to the fore, who tin pass the message, who are precise able, truthful we tin person minimum fuss," she continued.

West, a erstwhile inferior Foreign Office minister, would request enactment from 20% of Labour MPs — oregon 81 members — to trigger a contest.

She said astir 10 MPs are backing her effort and expressed assurance much would join, according to the report.

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(left to right) Attorney General Lord Richard Hermer, Home Secretary Shabana Mahmood, Met Police Commissioner Sir Mark Rowley, and Prime Minister Sir Keir Starmer during a gathering with representatives from transgression justness agencies astatine fig 10 Downing Street, Westminster, pursuing a panic onslaught successful Golders Green connected Wednesday greeting successful which 2 Jewish men were stabbed. Picture date: Thursday April 30, 2026. (Dan Kitwood/PA Images via Getty Images)

Labour suffered astir 1,400 losses crossed the U.K. successful this week’s elections, with Reform UK making important gains, according to GB News.

Starmer accepted work for the losses but resisted calls to resign, saying helium was "not going to locomotion distant and plunge the state into chaos."

Still, helium has not explicitly ruled retired a managed exit and is expected to code the concern connected Monday.

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U.K. Prime Minister Keir Starmer faces increasing unit wrong his Labour Party pursuing losses successful section elections. (Kin Cheung/AFP)

As of precocious Friday, 22 Labour MPs had publically called for the premier curate to measurement down oregon acceptable a timeline for his exit, the BBC reported.

West did not sanction a preferred replacement.

"I don't person a candidate," she said. "That's portion of the problem."

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"But I deliberation determination are respective radical who would similar to bash it, who person been readying for months, but I'm precise amazed that nary of them has popped up contiguous to accidental 'I volition bash it'," she added.

Fox News Digital’s Robert Schmad contributed to this report.