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A driver has been taken to a London hospital with serious injuries following a crash near Maidstone .
Police were called at 10.25pm after a Mercedes A-Class smashed into a barrier on the slip road of the Maidstone-bound A229, heading towards junction 6 of the M20.
Officers and medics were sent and the driver was taken to Kings College Hospital by road, with the help of an air ambulance crew, with serious injuries.
A passenger was taken to Medway Maritime Hospital.
Another three patients were treated at the scene but did not need to go to hospital.
Anyone who saw the car in the moments leading up to the collision is asked to call 01622 604100, quoting reference 20-1854.