M4 eastbound between J4B and J4 | Eastbound | Congestion

Location : The M4 eastbound between junctions J4B from the M25 anti-clockwise and J4 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 17:15 and 17:30 on 19 January 2026. Delay : There are currently delays of 30 minutes against expected traffic.