M4 fast slip from M4 J4 westbound exit to M4 spur (Heathrow) southbound | Westbound | Road Works

Location : The M4 westbound exit slip at junction J4 for Heathrow.
Reason : Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 14 March 2026 to 06:00 on 15 March 2026.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 18 March 2026.
Lanes Closed : All lanes will be closed.