MI5 refused to investigate ‘Russian spy’s’ links to Tories, says whistleblower

Party member lodges a complaint about the security services ignoring attempt of Russian infiltration into the Conservatives

MI5 repeatedly refused to investigate evidence that an alleged Russian spy was attempting to cultivate influence with senior Conservative politicians and channel illegal Russian funds into the party, a Tory member has alleged in a new complaint lodged with the investigatory powers tribunal (IPT).

Sergei Cristo, a Conservative party activist and a former journalist with the BBC World Service, has lodged a complaint with the investigatory powers tribunal, filing the case after corresponding with the chair of parliament's intelligence and security committee, Conservative MP Julian Lewis, who recommended he take the information to the authorities.