There's severe delays on the M4 in Cardiff due to an obstruction on the road. The M4 westbound is partially blocked, ...

Part of the M4 westbound between Maidenhead and Slough has closed while emergency services respond to a multi-vehicle crash ...

A crash in The Newport M4 Brynglas Tunnel forced a lane closure yesterday evening. A collision involving two vehicles ...

All traffic on a stretch of the M4 has been stopped following a fire. Traffic monitoring site Inrix reports: "All traffic ...

Traffic was queuing for around five miles along the M4, and a further five miles back along the M32, according to maps. It is not clear what caused the congestion. This blog is now closed.

The lane is closed to allow for emergency repairs on the M4 westbound before Junction 15 on the A419 Marlborough Road. The repairs were first reported on 4.14pm on Wednesday, January 29.