Police are investigating a road incident involving Sir Keir Starmer and a cyclist.
The Labour leader exchanged insurance information with a cyclist - who was described by an onlooker as 'in a lot of pain' on the ground - before leaving him in the care of paramedics, who took him to hospital with an injured arm.
Sir Keir, 58, had left the scene in Kentish Town, north west London by the time two police cars arrived at around 12.20pm on Sunday, The Sun reports.
Officers left a message at Sir Keir's home, and the Labour heavyweight said he attended a police station.
Police have not named Sir Keir because he has not been charged with an offence.
It is thought that he was driving an SUV that was involved in a collision with the cyclist near a pub.