Lady Starmer wears custom-made dress at London Fashion Week amid free clothes row

Sir Keir insisted that “very important” to him that rules are followed and to have “transparency”.

He said: “I’ve always said that. I said that before the election, I’ve reinforced it after the election.

“And that’s why, shortly after the election, my team reached out for advice on what declaration should be made, so it’s in accordance with the rules.

“They then sought out for further advice more recently, as a result of which they made the relevant declarations.

“But for me it’s really important that the rules are followed. That’s why I was very pleased my team reached out proactively – not once, but twice – because it is very important that we have transparency, very important that you and others can see the rules are being followed.”

It is understood that Lord Alli has also given Sir Keir £18,685 of work clothes and several pairs of glasses in the past year, as well as spending £20,000 on his accommodation during the general election campaign.