Newcastle MP Nick Brown to stand down

A party spokesperson said: “The Labour Party has established an independent complaints process that ensures complaints are decided impartially and fairly.”

Mr Brown has continued to sit as an independent MP while a party investigation has been carried out. 

The 73-year-old, who served in the cabinets of Tony Blair and Gordon Brown, and as chief whip for Jeremy Corbyn and Sir Keir Starmer, said he was leaving with a “heavy heart” but felt he had no choice.

He said had been caught up in an internal party complaints system that was unfair and lacking transparency.