Sir Keir Starmer is to promise bolder action to tackle "big challenges" facing the country, as he battles to persuade his MPs not to ditch him as Labour leader.
The prime minister will seek to reset his premiership in a speech on Monday, after heavy election losses left him facing renewed calls to quit.
Growing numbers of Labour MPs went public with calls for him to go over the weekend, with potential challenger Angela Rayner saying the party needed to do more to appeal to voters whose living standards had been squeezed.
It comes as backbencher Catherine West said she could try to trigger a leadership contest in the wake of his speech.
The north London MP has threatened to begin canvassing support if Sir Keir's address leaves her "dissatisfied" with his plan to turn the party's fortunes around.
