M4 spur (Heathrow) northbound between J4A and M4 | Northbound | Congestion

Location : The M4 SPUR northbound between junctions J4A and M4 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:30 and 17:45 on 25 March 2026.
Delay : There are currently delays of 10 minutes against expected traffic.