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HomeTrafficAccident Archive

M4 — UK Road Accident Archive

Motorway and A-road collisions from National Highways. Instant evidence reports from 99p — or £199 Expedited Service for serious cases£199 PREMIUM PLUS

19
Today
304
This Week
2,324
Severe Total
3,283
Total Collisions
304 collisions logged in the last 7 days — could one have affected you?
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19 serious collisions in this view. Premium Plus £199 includes a Premium Report, human review of your data within 4 working hours, and a panel solicitor calling you within 24h. Pick the relevant incident below to start.

281 incidents found on M4
M4
Severe Accident
M4 westbound between J5 and J6 | Westbound | Accident
Location : The M4 westbound between junctions J5 and J6 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The
📅 16 May 2026, 19:03 📍 Slough, Windsor
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M4
Severe Accident
M4 westbound between J16 and J17 | Westbound | Accident
Location : The M4 westbound between junctions J16 and J17 . Lane Closures : Lanes 2 and 3 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expe
📅 16 May 2026, 06:21 📍 Swindon, Royal Wootton Bassett
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M4
Severe Accident
M4 westbound between J18 and J19 | Westbound | Accident
Location : The M4 westbound between junctions J18 and J19 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : Th
📅 15 May 2026, 22:52 📍 Chippenham, Royal Wootton Bassett
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M40 2 related
Severe Accident
M40 northbound within J1A before M25 J16 anti-clockwise access | Northbound | Accident
Location : The M40 northbound at junction J1A . Lane Closures : Lane three is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear bet
📅 15 May 2026, 08:34 📍 High Wycombe, Beaconsfield
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Related segments — same incident

Severe M40 northbound between J1A and J2 | Northbound | Accident Cleared 10:05 View →
M4 2 related
Severe Accident
M4 eastbound between J18 and J17 | Eastbound | Accident
Location : The M4 eastbound between junctions J18 and J17 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 00:00 and 00:15 on 15
📅 14 May 2026, 22:56 📍 Royal Wootton Bassett, Swindon
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Related segments — same incident

Moderate M4 eastbound between J18 and J17 | Eastbound | Congestion Cleared 00:10 View →
M40 3 related
Severe Accident
M40 | Warwickshire | Lane Restrictions | Severe Delays
The M40 northbound in Warwickshire is experiencing severe delays following a collision involving a single vehicle. Two of three lanes are closed between J11 (Banbury) and J12 (Gaydon).
📅 14 May 2026, 17:51 📍 Banbury, Brackley
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Related segments — same incident

Severe M40 J11 northbound access | Northbound | Accident Cleared 18:50 View → Severe M40 northbound between J11 and J12 | Northbound | RoadOrCarriagewayOrLaneManagem Cleared 23:20 View →
M4
Severe Accident
M4 eastbound between J18 and J17 | Eastbound | Accident
Location : The M4 eastbound between junctions J18 and J17 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 15:45 and 16:00 on 14
📅 14 May 2026, 14:39 📍 Royal Wootton Bassett, Swindon
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M4 2 related
Severe Accident
M4 westbound at the Leigh Delamere services between J17 and J18 | Westbound | Congestion
Location : The M4 westbound between junctions J17 and J18 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 10:00 and 10:15 on 14
📅 14 May 2026, 09:29 📍 Royal Wootton Bassett, Swindon
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Related segments — same incident

Severe M4 westbound at the Leigh Delamere services between J17 and J18 | Westbound | Ro Cleared 13:25 View →
M42
Severe Accident
M42 J2 southbound exit | Southbound | Accident
Location : The M42 southbound exit slip at junction J2 . Lane Closures : Lane one is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to cl
📅 14 May 2026, 03:22 📍 Redditch, Bromsgrove
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M4
Severe Accident
M4 eastbound between J12 and J11 | Eastbound | Accident
Location : The M4 eastbound between junctions J12 and J11 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : Th
📅 13 May 2026, 17:49 📍 Theale, Reading
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M4
Severe Accident
M4 eastbound between J18 and J17 | Eastbound | Accident
Location : The M4 eastbound between junctions J18 and J17 . Lane Closures : Lanes 2 and 3 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expe
📅 13 May 2026, 15:44 📍 Royal Wootton Bassett, Swindon
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M4 2 related
Moderate Accident
M4 eastbound between J3 and J2 | Eastbound | Accident
Location : The M4 eastbound between junctions J3 and J2 . Reason : Road traffic collision. Status : Cleared.
📅 13 May 2026, 08:15 📍 Hounslow, Twickenham
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Related segments — same incident

Moderate M4 eastbound between J3 and J2 | Eastbound | Congestion Cleared 10:35 View →
M40
Severe Accident
M40 northbound between J3 and J4 | Northbound | Accident
Location : The M40 northbound between junctions J3 and J4 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : Th
📅 12 May 2026, 08:54 📍 High Wycombe, Marlow
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M4 2 related
Moderate Accident
M4 eastbound between J14 and J13 | Eastbound | Accident
Location : The M4 eastbound between junctions J14 and J13 . Reason : Road traffic collision. Status : Cleared.
📅 12 May 2026, 07:59 📍 Newbury, Hungerford
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Related segments — same incident

Moderate M4 eastbound between J14 and J13 | Eastbound | Congestion Cleared 10:35 View →
M4 4 related
Moderate Accident
M4 eastbound between J18 and J17 | Eastbound | Congestion
Location : The M4 eastbound between junctions J18 and J17 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 12:30 and 12:45 on 11
📅 11 May 2026, 11:14 📍 Royal Wootton Bassett, Swindon
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Related segments — same incident

Moderate M4 eastbound between J17 and J16 | Eastbound | Congestion View → Moderate M4 eastbound between J17 and J16 | Eastbound | Congestion Cleared 11:40 View → Moderate M4 eastbound between J17 and J16 | Eastbound | Accident Cleared 12:10 View →
M4
Severe Accident
M4 J16 eastbound exit | Eastbound | Accident
Location : The M4 eastbound exit slip at junction J16 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The eve
📅 10 May 2026, 15:43 📍 Swindon, Royal Wootton Bassett
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M4
Severe Accident
M4 eastbound between J14 and J13 | Eastbound | Accident
Location : The M4 eastbound between junctions J14 and J13 . Lane Closures : Lanes 2 and 3 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expe
📅 9 May 2026, 22:34 📍 Newbury, Hungerford
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M4
Severe Accident
M4 westbound between J12 and J13 | Westbound | Accident
Location : The M4 westbound between junctions J12 and J13 . Lane Closures : Lane three is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected
📅 9 May 2026, 13:19 📍 Thatcham, Theale
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M4 2 related
Moderate Accident
M4 westbound between J14 and J15 | Westbound | Accident
Location : The M4 westbound between junctions J14 and J15 . Reason : Road traffic collision. Status : Cleared.
📅 8 May 2026, 16:09 📍 Hungerford, Marlborough
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Related segments — same incident

Moderate M4 westbound within J14 | Westbound | Congestion Cleared 18:25 View →
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UK Road Accident Data — National Highways

UK Traffic Updates archives every collision, overturned vehicle incident, and vehicle fire recorded by National Highways across England's motorway and strategic road network. Records include timestamps, road closures, duration, severity, and location data.

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