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A male cyclist has suffered head injuries after a serious crash with a car this afternoon.
The air ambulance landed on the A2 near Canterbury following the collision.
It happened on the coastbound carriage about a mile past the Bridge junction at about 12.45pm.
The man, who was riding a bicycle, was taken to a London hospital with injuries described as serious.
A section of the coastbound carriageway remains shut, causing heavy delays.
The London-bound carriageway was closed for a short time to allow the air ambulance to land.
Kent Police and South East Coast Ambulance were both at the scene.