A Conservative MP has been cleared of allegations that he invited his lesbian housekeeper to join a threesome after an employment tribunal rejected the case and heard from the housekeeper’s former civil partner.

The Telegraph reports the housekeeper was described at the tribunal as a manipulative woman who would lie and exaggerate for her own financial gain or to get revenge on people against whom she held a grudge.

She twice won damages from Royal Mail after bringing false claims of a sexual assault and a work-related shoulder injury, the hearing was told.

Rejecting the sexual assault allegations made against the MP and his wife, employment judge Roger Peters said: “We find that the event did not happen.”

The housekeeper had claimed the MP and his wife attempted to perform a sex act on her in August of last year – claims which were always strenuously denied by the couple.

“None of this occurred, this is a complete fabrication from start to finish,” the MP said.

“I could see no reason for making such disgusting allegations against my wife and I other than extorting money.”

The MP said the woman’s employment was ended over concerns that she did not get on with his other staff and had caused some of them to quit.

The housekeeper’s former civil partner, who also worked for the MP at one stage, told the hearing that the woman could be “aggressive and erratic” and had a history of making up stories in order to claim money from her employers.

The housekeeper and her partner split up at the end of 2011 and have since launched legal proceedings to dissolve their civil partnership.

She was awarded £15,960 by a previous employment tribunal in the late 1990s after she alleged she had been sexually assaulted by a fellow Royal Mail worker.

After the hearing, the housekeeper’s solicitor, Dawn Gallie of law firm Battens, said that she was considering appealing against the tribunal’s decision.

The lawyer said: “Every employee should be safe in their place of work and not be subjected to inappropriate behaviour by their employer.

“[She] has been brave and acted with quiet dignity throughout these proceedings.

“We are sorry that she has not been able to prove her case in this employment tribunal, and we are now considering the possibility of an appeal.”

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