The last MP to be found guilty of a perverting the course of justice was Chris Huhne. He resigned and a by election was called. Onasanya’s leave-voting Peterborough seat has a Labour majority of 607.
A Labour Party spokeswoman said: “The Labour Party is deeply disappointed in Fiona Onasanya’s behaviour. It falls well below what is expected of politicians. She should now resign."
“Fiona Onasanya is being administratively suspended from the Labour Party and therefore the whip with immediate effect.”