M4 crash live updates as lanes blocked and long queues build

A crash has sparked long delays on the M4. Traffic Wales warned motorists that a collision had taken place on the westbound carriageway between J33 Cardiff West to J34 Miskin.

Lanes one and two are blocked as a result of the collision. Traffic officers are in attendance. An image released by Traffic Wales showed several vehicles on the hard shoulder of the motorway, with queueing traffic building up.

Follow our blog for live updates.