M4 spur (Heathrow) southbound between M4 and J4A | Southbound | Congestion

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 19:15 and 19:30 on 13 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.