It is one of a growing number of allegations about inappropriate behavior by British politicians and parliamentary staff.
British Prime Minister Theresa May had ordered an investigation into claims one of her senior deputies made inappropriate advances to a Conservative activist, as allegations spread of sexual harassment and abuse in British politics.
Writer and academic Kate Maltby says Cabinet minister Damian Green "fleetingly" touched her knee in 2015 and later sent her a "suggestive" text message after she was pictured wearing a corset in a newspaper.
Maltby wrote in the Times of London newspaper that Green "offered me career advice and in the same breath made it clear he was sexually interested."
Green, Britain's de facto deputy prime minister, denied making sexual advances.
Meanwhile, an opposition Labour Party activist says the party discouraged her from reporting her rape at a Labour conference in 2011, when she was 19. Bex Bailey said a party official told her "that if I did, it might damage me."