Andrew, formerly known as Prince Andrew and the Duke of York, was stripped of his royal titles in October after increasing scrutiny over his links to Epstein.
He has repeatedly denied any wrongdoing.
Emails released on Friday showed a number of exchanges between Epstein and Andrew in the years after the US billionaire pleaded guilty to soliciting a minor.
The files also show there have been multiple unsuccessful approaches from US authorities for Andrew to help with Epstein inquiries.
Calls are now growing for Andrew to give evidence of what he knows about Epstein in the US.
Prime Minister Sir Keir Starmer has been amongst those calling for him to testify, and told reporters over the weekend that “anybody who has got information should be prepared to share that information”.
“You can’t be victim-centred if you’re not prepared to do that,” he said. “Epstein’s victims have to be the first priority.”