The M4 is still closed after a bus fire earlier this evening between junctions 1 and 3. Investigators are at the scene, and police can't say at this stage when the motorway will reopen.
A bus is on fire on the M4, closing the motorway in both directions between junctions 1 and 3. Those travelling on the opposite carriageway say they could feel the heat of the blaze. Firefighters have arrived at the scene.