Tory MP Julian Knight has had the whip removed after a complaint about him was made to the Metropolitan Police.
A spokesperson for the Conservative chief whip, Simon Hart, said the complaint was made to the force on Wednesday evening and he removed the whip “with immediate effect”.
It means Mr Knight, who is also the chair of the Commons’ Digital, Culture, Media and Sport Committee, will now sit as an independent MP.
Mr Knight joined parliament in 2015, representing the seat of Solihull, having worked as a journalist before entering politics.
He is the latest in a string of MPs to lose the party whip after they became the subject of an allegation.
Labour suspended Conor McGinn’s membership on Wednesday while a complaint made to his party was being investigated.
The MP for St Helens North in Merseyside said he has not been told of the details of the allegation but was “confident that it is entirely unfounded”.