UK PM's office denies Johnson sexual advance allegations

British Prime Minister Boris Johnson's office has denied allegations he made unwanted sexual advances towards two women 20 years ago.

Journalist Charlotte Edwardes wrote in a column for The Sunday Times that Johnson put his hand on her thigh at a dinner party thrown by the magazine he was editing at the time.

"Under the table I feel Johnson's hand on my thigh. He gives it a squeeze," Edwardes wrote.

"His hand is high up my leg and he has enough inner flesh beneath his fingers to make me sit suddenly upright."