The 35-year-old insisted she was a passenger in her car at the time it was clocked.
A sitting Labour MP has been found guilty of perverting the course of justice after lying about who was driving her car when it was clocked breaking the speed limit.
Fiona Onasanya, member for Peterborough, Cambs, said her brother, Festus Onasanya, was behind the wheel of her Nissan Micra when it was caught travelling at 41mph in a 30mph zone.
The 35-year-old denied she had perverted the course of justice despite her brother pleading guilty to that charge, as well as two similar counts, earlier this year.
She said evidence her mobile phone was in use in the vicinity of the speed camera was proof she could not have been driving.
“I don’t use my phone when driving,” she told the court. “I would have had to have been a passenger.”
But a jury in a re-trial at London’s Old Bailey disbelieved her version of events and found her guilty on Wednesday.
Sentencing guidelines show perverting the course of justice carries a maximum penalty of life in prison and a fine. The Crown Prosecution Service recommends sentencing of between four and 36 months in prison.
Onasanya, who worked as a solicitor before being elected in 2017, will be sentenced alongside her brother on a date yet to be determined.
She returned the Labour whip last month, and a party spokesperson responded to her conviction by confirming she had been suspended from Labour and should resign as an MP.