A jury has retired in the trial of a Labour MP accused of lying to avoid a speeding charge.

Fiona Onasanya, 35, allegedly colluded with her brother Festus to escape prosecution for doing 41mph in a 30mph zone on July 24 last year.

A Notice of Intended Prosecution (NIP) was sent back to authorities claiming a Russian man was behind the wheel of her Nissan Micra when it was clocked speeding in the village of Thorney, near Peterborough.

But inquiries revealed he was in Russia with his parents at the time.

Festus Onasanya
Festus Onasanya pictured arriving at the Old Bailey during the trial (John Stillwell/PA)

Festus Onasanya, 33, from Cambridge, has admitted three charges of perverting the course of justice, including over the July 24 incident.

His sister, elected as Peterborough MP in June last year, denies one charge of perverting the course of justice.

Judge Nichola Hilliard QC sent the 11-strong Old Bailey jury out to deliberate on its verdict just after 10.30am on Thursday.