Conservative Party deputy chairman Robert Halfon is believed to be the subject of a blackmail plot, which emerged as he admitted to a relationship with a Tory campaigner.
Mr Halfon, the former political director of Conservative Friends of Israel and the descendant of Libyan Jews, was reportedly filmed as he left a club with the woman.
Senior Conservative aide Mark Clarke has been reported to the party for allegedly attempting to mastermind the blackmail plan.
The party said it had received a complaint about Mr Clarke’s actions in August and that chairman Lord Feldman was investigating.
