M4 traffic LIVE: Road closed as huge crash sparks major delays

A crash on the M4 has once again created a traffic nightmare for commuters on Friday morning.

Police say the road is expected to remain closed for "some time".

A spokesperson for South Wales Police said: "We are at the scene of a collision on the M4 J37 Eastbound on slip.

"The road is currently closed and It is expected to remain closed for some time.

"Motorists are advised to avoid the area and use alternative routes where possible. Delays are expected in the area."

THIS IS A LIVE BLOG. FOLLOW BELOW FOR UPDATES.