Sky News has exclusively challenged Lord Peter Mandelson over his relationship with Jeffrey Epstein.

It is the first time the Labour peer has been seen in the UK since he was fired as the ambassador to the US in September.

Lord Mandelson was sacked due to his links to the late sex offender.

It emerged over a series of days that the so-called “Prince of Darkness” had maintained his relationship with the disgraced financier following his first conviction, and had told him to fight it in the courts.

It led Sir Keir Starmer to dismiss him, just one day after he had publicly backed the peer in the House of Commons at Prime Minister’s Questions.

Sir Keir said new information had come to light, which showed Lord Mandelson’s relationship with Epstein was “materially different” to what he had told the government.

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The peer took a number of days to return to the UK, reportedly because his dog was unwell.

However, he was spotted on Monday evening by Sky News at a train station – but declined to answer any questions.