Live updates as multi-vehicle crash causes delays on M4 near Port Talbot

There are long delays on the M4 following a "multi-vehicle" crash. One lane is blocked and traffic is queuing on the M4 at Neath Port Talbot.

According to traffic monitoring system Inrix a "multi-vehicle accident" is causing disruption on the eastbound side of the carriageway between junction 40 for Tanygroes Street and junction 38 at Margam.

There is congestion to junction 41 for Baglan. Traffic cameras show there are long queues. Three traffic cameras have been switched off as the incident is dealt with. Traffic appears to be clear at junction 39 for Groes.

Scroll down for the latest live updates.