A former Conservative MP Harvey Proctor is suing the Metropolitan police and the man who sparked the controversial Westminster child sexual abuse investigation for £1.6mm.

Operation Midland was launched after a single accuser, who can only be identified as “Nick”, told police he had been raped and abused for nine years by the VIP gang.

Proctor, 71, said the disproved accusations and investigation had caused him to lose his “home, employment, reputation and other consequential losses including personal injury”.

As part of their investigation, Met police raided the homes of prominent figures, including D-day veteran Edwin Bramall and the late ex-home secretary Leon Brittan.

The £2.5m investigation collapsed without any arrests. Nick’s Westminster claims included allegations of child murder, rape and torture by senior figures in politics, the army and security services.

Nick is separately facing a trial in connection with six charges relating to indecent images of children.