The scene of the crash in High Road East Finchley.
A motorcyclist remains in a critical but stable condition in hospital after a collision in East Finchley.
The 29-year-old was riding his motorbike in High Road when he was in collision with a car at the junction with Oak Lane at approximately 2.30pm on Saturday.
Members of the public rushed to help the motorcyclist, who was lying in the road when police and paramedics arrived at the scene.
He was taken by air ambulance to Royal London Hospital where he was treated for pelvis, chest and head injuries.
No arrests were made.
Police are appealing for witnesses to contact the Collision Investigation Unit on 020 8842 1817.
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