I spoke to the rest of the JPC team at 6 o'clock and he had been released from hospital and was on his way to the circuit.
The car apparently aquaplaned off the motorway in a heavy downpour and bounced off the central reservation, the concrete barrier, and back to the central reservation again.
Kev sounded to be the most battered of the car's occupants but even he is just strapped up and fine apparently. Although I doubt that the next few nights sleeping on a blow-up bed will be very comfortable. Just bumps and bruises so no damage done that won't heal - apart from to the car which after all is just metal and can be replaced.