A TWO-CAR collision on the M5 in North Somerset last night has left a man in a critical condition.

The M5 northbound between J20 Clevedon and J19 Portishead was closed by police from around 10pm as a result of the crash.

The ambulance service also attended the incident and treated one casualty, a 46-year-old man who was taken to hospital after being arrested.

Police say the man was arrested on suspicion of driving while above the alcohol limit, and remains in a 'critical but stable condition'.

The road reopened just over two hours later at around midnight.

A spokesperson for Avon and Somerset Police said: "We were called shortly before 10pm last night (Wednesday, May 29) following a report of a two-car collision on the M5 northbound between junctions 20 (Clevedon) and 19 (Portishead).

"Officers attended, alongside the ambulance service, and closed the carriageway.

"A 46-year-old man was arrested on suspicion of driving while above the alcohol limit and was taken to hospital and is in a critical but stable condition.

"The vehicles were recovered and the road was reopened shortly after midnight.

"If you witnessed the collision or have any dashcam footage which could help our investigation, please call 101 and quote reference 5224138248."