Motorists have been facing long rush-hour delays this morning following a collision on the M4.
The incident has caused heavy congestion eastbound between Junction 7 at Slough and Junction 11, with Highways England saying at 9am that there are three-hour delays on the motorway.
Earlier this morning, it tweeted to say the collision had led to a spillage on the road, forced emergency services to close two lanes.
Traffic conditions are not expected to begin to return to normal until about 11am.
The incident has led to heavy traffic on surrounding roads as motorists attempt to avoid the M4, with long queues on the A4 between Maidenhead Bridge and the Castle Hill roundabout.
