Emergency services were called to Hampden Park after a crash this morning (November 19).
Police were called to Lottbridge Drove near the Hydneye roundabout after a car crash at 9.45am.
The road around the area is shut.
East Sussex Fire and Rescue Service said it was called at 9.46am to a crash between a car and a pick-up truck outside Morrisons.
One person was trapped in a vehicle, and firefighters released them into the care of the ambulance service.
They were then taken to hospital by air ambulance, which arrived at the scene at 10.17am.