Senior ministers are holding private talks on who should urge the Labour leader to step down, as mood around No 10 shifts from optimism to alarm. Calls for him to quit are expected after the 7 May local elections, with debate over sending a single envoy or a delegation.

Donald Trump has authorised the US Navy to use lethal force against Iranian boats that threaten vessels in the Strait of Hormuz, after talks faltered. The move escalates tensions in the Gulf, increasing risks to shipping and miscalculation as both sides entrench.

Cabinet figures are losing confidence in the PM after a security row linked to Mandelson, with one minister saying patience has run out. Allies of Wes Streeting are open to a pact with Angela Rayner to unite centre and left and avert a leadership fight, though policy gaps and an HMRC inquiry pose hurdles.

At an MPs hearing, ex-Foreign Office chief Sir Olly Robbins said No 10 pressed officials to push through vetting and an ambassador role for a politically connected figure, contradicting the PM. Senior ministers voiced concern, while No 10 said the proper process was followed.