Location: eastbound at junction J19 (Bristol) .
Due to: Road traffic collision.
Time To Clear : The event is expected to clear between 20:15 and 20:30 on 21 May 2025.
Normal traffic conditions are expected between 20:15 and 20:30 on 21 May 2025.
Delay : There are currently delays of 1 hour against expected traffic.
Lanes Closed : All lanes are closed.
Previous
Due to: Following an earlier accident.
Nearest town: 4.84m from Alveston.

Description: M4 : Now clear : Westbound : J41 (Port Talbot) Pentyla/Baglan to J44 (Swansea) Lon Las,Start time: 21/05/2025 18:32 ,Expected end time:21/05/2025 18:37,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 18:32
Nearest town: 1.92m from Port Talbot.

Description: M4 : Now clear : Westbound : J24 (Newport) Coldra to J26 (Newport) Malpas,Start time: 21/05/2025 18:36 ,Expected end time:21/05/2025 18:41,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 18:36
Nearest town: 1.17m from Caerleon.

Description: M4 : Now clear : Westbound : J41 (Port Talbot) Pentyla/Baglan to J44 (Swansea) Lon Las,Start time: 21/05/2025 18:32 ,Expected end time:21/05/2025 18:37,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 18:32
Nearest town: 1.92m from Port Talbot.

Location: eastbound between junctions J6 (Slough)and J5 (Colnbrook) .
Due to: Road traffic collision.
Status : Cleared.
Nearest town: 1.57m from Slough.

Description: M4 : Westbound : J24 (Newport) Coldra to J26 (Newport) Malpas : Congestion : Delays possible :,Start time: 21/05/2025 16:20 ,Expected end time:21/05/2025 19:20,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 16:20
Nearest town: 1.17m from Caerleon.

Description: M4 : Eastbound : J32 (Cardiff) Coryton : offslip : Congestion : Delays possible :,Start time: 21/05/2025 16:35 ,Expected end time:21/05/2025 18:34,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 16:35
Nearest town: 1.51m from Llandaff.

Description: M4 : Westbound : J41 (Port Talbot) Pentyla/Baglan to J44 (Swansea) Lon Las : Congestion : Congestion : Delays possible :,Start time: 21/05/2025 16:18 ,Expected end time:21/05/2025 18:18,Severity: Moderate,Source: Welsh Government,Last updated: 21/05/2025 16:18
Nearest town: 1.92m from Port Talbot.

Location: eastbound at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 19:30 and 19:45 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.5m from Alveston.

Location: eastbound entry slip at junction J20 (Bristol) from M5 north.
Due to: Congestion.
Normal traffic conditions are expected between 19:30 and 19:45 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.69m from Alveston.

Location: eastbound between junctions J6 (Slough)and J5 (Colnbrook) .
Due to: Congestion.
Normal traffic conditions are expected between 19:15 and 19:30 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Earlier
Due to: Caused by an earlier accident.
Nearest town: 0.55m from Slough.

Location: eastbound between junctions J22 (Avonmouth)and J19 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 19:00 and 19:15 on 21 May 2025.
Cause : Road traffic collision.
Delay : There are currently delays of 50 minutes against expected traffic.
Nearest town: 2.29m from Alveston.

Location: westbound between junctions J10 (Reading)and J11 (Basingstoke) .
Due to: Congestion.
Normal traffic conditions are expected between 18:00 and 18:15 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 3.86m from Reading.

Location: eastbound at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 17:45 and 18:00 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.7m from Alveston.

Location: eastbound entry slip at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 18:00 and 18:15 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.78m from Alveston.

Location: eastbound entry slip at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 18:15 and 18:30 on 21 May 2025.
Cause : Road traffic collision.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 3.88m from Alveston.

Location: westbound at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 17:30 and 17:45 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.68m from Alveston.

Location: westbound entry slip at junction J20 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 17:00 and 17:15 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 2.52m from Alveston.

Location: westbound exit slip at junction J19 (Bristol) .
Due to: Congestion.
Normal traffic conditions are expected between 16:45 and 17:00 on 21 May 2025.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 5.08m from Bristol.

Location: westbound entry slip at junction J22 (Avonmouth) .
Due to: Roadworks.
Period : from 20:56 on 21 May 2025 to 06:00 on 22 May 2025.
Lanes Closed : All lanes are closed.
Nearest town: 4.13m from Caldicot.

Location: westbound exit slip at junction J10 (Reading) .
Due to: Roadworks.
Period : from 20:19 on 21 May 2025 to 05:00 on 22 May 2025.
Lanes Closed : All lanes are closed.
Nearest town: 4.39m from Bracknell.

Location: eastbound exit slip at junction J10 (Reading) .
Due to: Roadworks.
Period : from 20:17 on 21 May 2025 to 05:00 on 22 May 2025.
Lanes Closed : All lanes are closed.
Nearest town: 4.82m from Bracknell.

Location: westbound between junctions J16 (Swindon)and J17 (Chippenham) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 5.8m from Chippenham.

Location: westbound at junction J6 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 0.47m from Eton.

Location: westbound entry slip at junction J6 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 0.77m from Eton.

Location: westbound between junctions J5 (Colnbrook)and J6 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 0.4m from Slough.

Location: westbound between junctions J6 (Slough)and J7 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 1.25m from Eton.

Location: eastbound between junctions J10 (Reading)and J8 (High Wycombe) .
Lane Closures : Lanes 1,2 and 3 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 20:00 on 2 June 2025 to 06:00 on 3 June 2025.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 3.18m from Bray.

Location: eastbound between junctions J11 (Basingstoke)and J10 (Reading) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 2.82m from Reading.

Location: westbound exit slip at junction J6 (Slough) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 0.47m from Eton.

Location: westbound between junctions J8 (High Wycombe)and J10 (Reading) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 30 May 2025 to 06:00 on 31 May 2025.
Schedule : From 20:00 on 2 June 2025 to 06:00 on 3 June 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 2.4m from Bray.

Location: eastbound between junctions J10 (Reading)and J8 (High Wycombe) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 30 May 2025.
Nearest town: 4.05m from Bracknell.

Location: eastbound exit slip at junction J8 (High Wycombe) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 29 May 2025 to 06:00 on 30 May 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 1.26m from Bray.

Location: eastbound between junctions J10 (Reading)and J8 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 May 2025 to 06:00 on 29 May 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 4.05m from Bracknell.

Location: eastbound between junctions J10 (Reading)and J8 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 29 May 2025 to 06:00 on 30 May 2025.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 2.16m from Bray.

Location: eastbound at junction J8 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 29 May 2025 to 06:00 on 30 May 2025.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 1.26m from Bray.
