The B2112 Common Lane at Ditchling has been closed following a four vehicle collision this afternoon (Tuesday March 18).
Emergency services were called to the scene just north of Ditchling at 1.17pm.
A number of people have been injured although there is no indication that any are life-threatening at this stage.
Vehicles ivolved in tghe collision included a silver VW Golf, black Citreon C1, and blue Peugeot 208.
An air ambulance landed at the scene.
The road has remained closed while accident investigation work is carried out.
It is expected to remain shut until the early evening.