08:50AM, Monday 19 November 2012
A traffic incident is causing delays on the M4 London-bound between junctions six and 11.
The average speed of traffic is currently 20mph and travel time is estimated at about one hour.
One eyewitness reported a collision between two vehicles just past junction 7 London-bound, which was on the hard-shoulder.
Police have no further details on the incident at this time.