Former PM says it is right time to go, which will trigger byelection that Greens’ Zack Polanski could target

• UK politics live – latest updates

Keir Starmer is to quit as the MP for Holborn and St Pancras, saying it is the right time for him to leave the Commons.

Starmer, who resigned as prime minister in July, told the Camden New Journal he wanted to focus on international affairs and “pass the baton to a successor”.

Exclusive: Prime minister wants to ‘bring back hope’ by tackling cost of living as MPs call for electoral reform

Andy Burnham will drive home his pledge to bring more essential services back into public control, telling MPs in the Commons on Tuesday that it will be the only way to improve growth across the country.

Burnham will address the house for the first time in 16 years from the frontbench, and six weeks since he became prime minister, after spending the summer recess announcing a slew of policies that will now be put before MPs.

Conservative leader sacks shadow chancellor Mel Stride and shadow foreign secretary Priti Patel

• Conservative reshuffle: who’s who in Kemi Badenoch’s top team?

Kemi Badenoch sacked her shadow chancellor, Mel Stride, and the shadow foreign secretary, Priti Patel, in a sweeping Conservative reshuffle on Monday, replacing Stride with Andrew Griffith, and Patel with Tom Tugendhat.

Stride, who had been shadow chancellor since Badenoch became leader, was widely seen among Tories as failing to make an impression at a time when Labour had been under pressure over the economy.