M4 westbound between J11 and J12 | Westbound | Congestion

Location : The M4 westbound between junctions J11 and J12 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 21:15 and 21:30 on 12 September 2025.
Delay : There are currently delays of 10 minutes against expected traffic.