Lane closures on M4 westbound between Reading and Theale due to collision

There are delays on the M4 between Junctions 11 and 12 following an incident involving a car and lorry.

There are currently two and a half miles of congestion between Reading (J11) and Theale (J12) with delays of up to 20 minutes against traffic.

Two lanes are closed - lanes one and two - and emergency services are on the scene.

Update: The event has now cleared.