UPDATE: 8.34am
Congestion is reported westbound between J24 at the Coldra and J28 at Tredegar Park.
UPDATE: 8.04am
Delays are possible on the A48M westbound between J29 at Castleton and J29A at St Mellons due to congestion.
UPDATE: 7.46am
The M4 is busy but moving this morning eastbound between J27 at High Cross and J26 at Malpas.
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