Former Australian Test cricketer Shane Warne has rejected as false allegations he assaulted a UK glamour model, saying he's already been cleared by police.

The famed spin bowler said he was shocked to read reports in the London press on Sunday concerning Valerie Fox and an alleged altercation at a nightclub.

"I have fully cooperated with police and they have now had the opportunity of seeing CCTV and speaking to witnesses," Warne, 48, said in a post on Twitter on Monday.

"The police have confirmed to me that I have been cleared of the allegation and that no further action will be taken.

"This is now the end of the matter."

The woman had posted a picture of herself on social media of what appeared to be a black eye.

Scotland Yard confirmed police had looked in to an allegation of assault at a nightclub in Westminster in the early of hours of Saturday.

"A 48-year-old man attended a central London police station where he was interviewed under caution in connection with the incident," a spokesman said.

"He has since been released with no further action to be taken."