Police were called to the eastbound carriageway of the A406 with the junction of Bull Lane, N9, at approximately 02:00hrs on 11 February to reports of a collision between a car and stationary lorry.
London Ambulance Service was called to the scene.
A man, aged 27, was pronounced dead at the scene. No one else was injured.
Next of kin have been informed.
Enquiries continue.
No arrests.