Live updates as M4 crash sees traffic held on motorway causing delays to major Cardiff routes

One lane of the motorway is blocked with congestion building after a crash on the M4. One lane of the westbound carriageway is closed due to an accident appearing to involved one vehicle near the Coryton interchange, outside of Cardiff. The incident happened just after 7:10am on Wednesday, morning.

Traffic monitoring system INRIX have shared an alert which reads: "One lane blocked and queueing traffic due to accident, one car involved and debris on road on M4 Westbound from J32 A470 Northern Avenue (Coryton Interchange) to J33 A4232 (Cardiff West And Services). Lane three (of three) is blocked." Traffic cameras from the area show the fire service in attendance with officers clearing the carriageway.

Traffic is building in the area.

Live updates below: