cabinet minister

Before becoming Manchester mayor in 2017, Burnham served as a cabinet and shadow cabinet minister under successive Labour leaders and made two unsuccessful Labour leadership bids.

Speaking at Prime Minister's Questions last week, Sir Keir insisted that he "never authorised" attacks on his cabinet ministers, and decried such events as "unacceptable".

One cabinet minister said: "there is a real sense that everything we want to do is undermined by mistakes by No 10."

Allies of the PM have told media he could face a leadership challenge from another cabinet minister such as Health Secretary Wes Streeting.

The PM was speaking at Prime Minister's Questions after some of his allies told numerous media outlets he could face a leadership challenge from another cabinet minister such as Health Secretary Wes Streeting.