Prime Minister Sir Keir Starmer is facing questions over his appointment of Peter Mandelson as the UK's ambassador to the US, after he was sacked over his links to the late convicted paedophile Jeffrey Epstein.
Sir Keir fired Mandelson after reviewing emails that showed the Labour peer sent supportive messages to Epstein as he faced charges for sex offences in 2008.
The government said new information about the "depth" of Lord Mandelson's relationship with Epstein had not been known when he was appointed last year.
The Conservatives are calling for the publication of all vetting material, while some Labour MPs are criticising Sir Keir for appointing Mandelson in the first place.
The prime minister's spokesman said vetting was handled by government departments and "any suggestion that No 10 was involved is untrue".
