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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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23 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
M48
Severe Accident
M48 | Gloucestershire | Carriageway Closure | Expect Delays
The M48 Severn Bridge in Gloucestershire is currently closed eastbound between J2 (Chepstow) and J1 (Aust) due to a collision.
📅 19 Apr 2026, 01:20 📍 Lydney, Chipping Sodbury
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M48
Severe Accident
M48 eastbound between J2 and J1 | Eastbound | Accident
Location : The M48 eastbound between junctions J2 and J1 . Lane Closures : Lane one is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to
📅 19 Apr 2026, 00:17 📍 Lydney, Chipping Sodbury
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M4
Severe Accident
M4 eastbound between J3 and J2 | Eastbound | Accident
Location : The M4 eastbound between junctions J3 and J2 . Lane Closures : Lane one is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to
📅 16 Apr 2026, 12:00 📍 Hounslow, Twickenham
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M40
Severe Accident
M40 southbound between J11 and J10 | Southbound | Accident
Location : The M40 southbound between junctions J11 and J10 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear :
📅 16 Apr 2026, 01:57 📍 Bicester, Woodstock
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M40 2 related
Severe Accident
M40 southbound within J11 | Southbound | Congestion
Location : The M40 southbound at junction J11 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 15 April 2026.
📅 15 Apr 2026, 17:39 📍 Banbury, Brackley
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Related segments — same incident

Severe M40 southbound between J11 and J10 | Southbound | Overturned Vehicle Cleared 20:00 View →
M42 2 related
Severe Accident
M42 northbound between J10 and J11 | Northbound | Accident
Location : The M42 northbound between junctions J10 and J11 . Lane Closures : Lane two is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected
📅 15 Apr 2026, 17:04 📍 Tamworth, Atherstone
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Related segments — same incident

Moderate M42 northbound between J10 and J11 | Northbound | Congestion Cleared 20:55 View →
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
📅 15 Apr 2026, 06:37 📍 Slough, Windsor
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M4
Severe Accident
M4 westbound between J8 and J10 | Westbound | Accident
Location : The M4 westbound between junctions J8 and J10 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The
📅 14 Apr 2026, 10:43 📍 Twyford, Woodley
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M4
Severe Accident
M4 westbound between J2 and J3 | Westbound | Accident
Location : The M4 westbound between junctions J2 and J3 . Lane Closures : Lanes 2 and 3 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expect
📅 14 Apr 2026, 00:29 📍 Hounslow, Twickenham
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M4 2 related
Severe Accident
M4 J16 westbound access | Westbound | Accident
Location : The M4 westbound entry slip at junction J16 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 18:45 and 19:00 on 13 Apr
📅 13 Apr 2026, 16:52 📍 Swindon, Royal Wootton Bassett
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Related segments — same incident

Severe M4 westbound between J16 and J17 | Westbound | Accident Cleared 21:25 View →
M4
Severe Accident
M4 westbound between J15 and J16 | Westbound | Accident
Location : The M4 westbound between junctions J15 and J16 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : Th
📅 13 Apr 2026, 02:43 📍 Swindon, Royal Wootton Bassett
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M42
Severe Accident
M42 J5 southbound access | Southbound | Accident
Location : The M42 southbound entry slip at junction J5 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 20:15 and 20:30 on 12 Ap
📅 12 Apr 2026, 18:19 📍 Knowle, Dorridge
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M40
Severe Accident
M40 southbound between J2 and J1A | Southbound | Accident
Location : The M40 southbound between junctions J2 and J1A . Lane Closures : Lane four is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected
📅 12 Apr 2026, 15:38 📍 High Wycombe, Marlow
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M4 2 related
Severe Accident
M4 westbound between J11 and J12 | Westbound | Accident
Location : The M4 westbound between junctions J11 and J12 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : Th
📅 12 Apr 2026, 14:04 📍 Theale, Reading
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Related segments — same incident

Moderate M4 westbound between J11 and J12 | Westbound | Congestion Cleared 17:35 View →
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
📅 12 Apr 2026, 13:08 📍 Slough, Windsor
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M4
Severe Accident
M4 eastbound between J4 and J3 | Eastbound | Accident
Location : The M4 eastbound between junctions J4 and J3 . Lane Closures : Lane one is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to
📅 12 Apr 2026, 11:30 📍 Feltham, Hayes
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M4
Severe Accident
M4 eastbound within J14 | Eastbound | Accident
Location : The M4 eastbound at junction J14 . Lane Closures : The hard shoulder, lanes 1 and 2 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is
📅 11 Apr 2026, 01:43 📍 Hungerford, Newbury
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M42 2 related
Moderate Accident
M42 southbound between J10 and J9 | Southbound | Accident
Location : The M42 southbound between junctions J10 and J9 . Reason : Road traffic collision. Status : Cleared.
📅 10 Apr 2026, 16:49 📍 Tamworth, Atherstone
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Related segments — same incident

Moderate M42 southbound within J10 | Southbound | Congestion Cleared 19:10 View →
M4
Severe Accident
M4 eastbound between J5 and J4B | Eastbound | Accident
Location : The M4 eastbound between junctions J5 and J4B . Lane Closures : The hard shoulder, lanes 1 and 2 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear :
📅 10 Apr 2026, 15:58 📍 Iver, Staines
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M4
Severe Accident
M4 eastbound within J20 | Eastbound | Accident
Location : The M4 eastbound at junction J20 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 21:15 and 21:30 on 9 April 2026. Re
📅 9 Apr 2026, 18:29 📍 Chipping Sodbury, Keynsham
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M4 2 related
Moderate Accident
M4 eastbound between J13 and J12 | Eastbound | Congestion
Location : The M4 eastbound between junctions J13 and J12 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 9 A
📅 9 Apr 2026, 15:23 📍 Thatcham, Theale
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Related segments — same incident

Moderate M4 eastbound between J13 and J12 | Eastbound | Accident Cleared 19:15 View →
M40
Severe Accident
M40 northbound between J3 and J4 | Northbound | Accident
Location : The M40 northbound between junctions J3 and J4 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 13:15 and 13:30 on 9
📅 9 Apr 2026, 10:49 📍 High Wycombe, Marlow
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M4 2 related
Severe Accident
M4 eastbound between J15 and J14 | Eastbound | Accident
Location : The M4 eastbound between junctions J15 and J14 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 20:30 and 20:45 on 7
📅 7 Apr 2026, 18:23 📍 Hungerford, Marlborough
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Related segments — same incident

Moderate M4 eastbound between J15 and J14 | Eastbound | Congestion Cleared 20:25 View →
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UK Road Accident Data — National Highways

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