Labour tonight demanded a probe into an £800,000 credit facility provided to Boris Johnson by a distant Canadian cousin.
Party chairwoman Anneliese Dodds wrote to Parliament’s Standards Commissioner calling for an investigation.
It follows weekend reports that, when he was Prime Minister, Mr Johnson had an arrangement with multimillionaire relative Sam Blyth which allowed the ex-Tory leader to fund his lavish lifestyle while in No10 and immediately afterwards.