Long delays are expected on one of the county's busiest roads after it was closed due to a crash.
Emergency services are dealing with a collision involving a motorbike and a car on the A27 westbound by the Southerham roundabout at Lewes at 3pm.
The motorcyclist is being treated by an ambulance crew and the driver is unhurt.
Lane one westbound remains close on the A27 while lane two has been re-opened.
Motorists are asked to avoid the area if possible.