M4: Multi-vehicle crash closes one lane of M4 motorway

The M4 Eastbound from Junction 7 (Slough West) and J6 A355 Royal Windsor Way (Slough/Windsor) is down to one lane. 

According to AA Live traffic updates, cameras show one of the cars involved has been recovered, and one remains on scene.

Motorists are facing long queues and delays due to the lane closure.

Updates as we have them.