Angela Rayner ©House of Commons

The investigation, led by the independent adviser on ministers’ interests, Sir Laurie Magnus, followed Ms Rayner’s admission that she had underpaid stamp duty on a second home. She attributed the error, which amounted to an underpayment of around £40,000 on an £800,000 seaside flat in Hove, to “poor advice” and stated she “deeply regretted” it.

The resignation, which came at noon on Friday, September 5, concludes a turbulent week for Prime Minister Sir Keir Starmer, coming at the start of his government’s “phase two” reset. Mr Starmer had previously been non-committal about his deputy’s future should a breach be found.

Ms Rayner’s departure now triggers an election for the deputy leadership of the Labour Party, just weeks before the party’s annual conference in Liverpool.