SOUTH Wales Police is investigating a serious collision on the M4 earlier today.

The collision, involving a white Renault Traffic van and a silver Vauxhall Vivaro van, happened on the westbound carriageway between junctions 30 to 32 at around 3.10pm.

The driver of the Renault Traffic van was taken to hospital with life-threatening injuries. Next of kin have been informed.

Enquiries are ongoing to establish the circumstances of the collision and officers would like to speak to anyone who witnessed the collision or manner of driving prior to it.

Anyone with dash-cam or mobile phone footage which could assist the investigation is also urged to please contact South Wales Police quoting occurrence 2100024762.