The former US vice-president Joe Biden has denied sexually assaulting his former staffer 27 years ago.

According to Evening Standard, Biden said the claims by Tara Reade “aren’t true… this never happened”.

Ms Reade came forward last month to accuse him of pinning her against the wall, reaching under her skirt and assaulting her when she worked in the Senate in 1993.

Democrat presidential hopeful Mr Biden is now demanding the National Archives to release any records of her complaint.

“I recognise my responsibility to be a voice, an advocate, and a leader for the change in culture that has begun but is nowhere near finished,” the former vice-president said in a lengthy statement, ahead of a planned appearance on MSNBC’s Morning Joe talk show.

“So I want to address allegations by a former staffer that I engaged in misconduct 27 years ago: they aren’t true. This never happened.”

Mr Biden has faced growing pressure from Democrats to make a statement despite the party leadership, including House Speaker Nancy Pelosi, backing him.