Tom Watson, who had role in attempted coup against Tony Blair in 2006, said move would go down extremely badly with voters

Labour MPs have been urged to stop plotting to remove Keir Starmer by Tom Watson, who as a junior minister spearheaded the last attempted coup against a Labour prime minister, when Tony Blair faced a revolt in 2006.

Watson’s warning came as Steve Reed, the housing and communities secretary, and a key Starmer loyalist, said Labour would risk “annihilation” if it decided to try to change leaders.

Labour leadership challenge in wake of disastrous local poll results could unleash chaos in party, MPs told

Cabinet ministers have told mutinous Labour MPs that any attempt to oust Keir Starmer after a potentially disastrous set of election results this week would unleash chaos for the party that would not be easily overcome.

Several, however, told the Guardian that even with the prime minister’s determination to stay in Downing Street after Thursday’s vote, the mood on the backbenches was febrile and events could yet spiral out of control.

Greater Manchester mayor’s team have been quietly preparing a manifesto and identifying seats where MPs could step aside to allow a Westminster run

• Andy Burnham has plan to return to Westminster ‘within weeks’, allies say

When the eyes of Westminster were on the committee rooms and voting lobbies of parliament this week, Keir Starmer’s political future was being decided elsewhere.

Wes Streeting and Angela Rayner were buttering up Labour MPs in the Strangers’ Bar in parliament as colleagues spoke of their “existential” fear about the crucial elections next week.

Exclusive: Greater Manchester mayor said to have identified seats where MPs would step aside to allow leadership bid

• ‘No other plan comes close’: Labour MPs turn to Burnham as pressure mounts on Starmer

Andy Burnham has a credible plan to return to Westminster “within weeks”, his allies have said, with the Greater Manchester mayor expected to use a byelection fight to set out a new agenda for government.

Burnham, who was blocked by Labour’s ruling body from running in February’s Gorton and Denton byelection, has identified several seats where MPs are prepared to step aside for his leadership bid.

Labour MPs are reportedly urging colleagues to demand Burnham’s return in order to position him as Starmer’s eventual successor

If Keir Starmer is looking for a saviour to keep him in No 10 after the May elections and the scandal of the Mandelson saga, there is an unlikely figure in the north-west who might help him – temporarily.

It has been the week where the prime minister seemed at his most isolated. But Labour MPs told the Guardian they were urging colleagues not to depose Starmer next month, and were instead preparing to demand that Andy Burnham return to parliament in order to succeed him before the next general election.