A serious crash on a busy road has left four people hospitalised. 

Emergency services were called to a crash involving two cars on the A308 Bisham roundabout at 10.21am today. 

The road has been reopened. 

Two people from one vehicle have been taken to the John Radcliffe Hospital and two people from the other vehicle have been taken to Wexham Park Hospital.

The road was closed from the A404 junction to Lee Lane.

Anyone who witnessed the crash should call 101 and motorists advised to find alternative routes.