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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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281 incidents found on M4
M4
Moderate Accident
M4 J16 westbound exit | Westbound | Congestion
Location : The M4 westbound exit slip at junction J16 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 19:30 and 19:45 on 27 April
📅 27 Apr 2026, 15:44 📍 Swindon, Royal Wootton Bassett
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M48 3 related
Moderate Accident
M48 westbound between J1 and J2 | Westbound | Congestion
Location : The M48 westbound between the M4 and junction J2 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 16:00 and 16:15 on 2
📅 27 Apr 2026, 14:59 📍 Chipping Sodbury, Lydney
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Related segments — same incident

Moderate M48 westbound between J1 and J2 | Westbound | Congestion Cleared 15:40 View → Moderate M48 westbound between J1 and J2 | Westbound | Accident Cleared 16:30 View →
M4
Severe Accident
M4 | Wiltshire | Road Closure | Long Delays 60 minutes
The M4 in Wiltshire is closed in both directions between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 17:40 yesterday afternoon.
📅 27 Apr 2026, 10:43 📍 Swindon, Royal Wootton Bassett
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M4 4 related
Severe Accident
M4 J13 westbound access | Westbound | Accident
Location : The M4 westbound entry slip at junction J13 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 17:45 and 18:00 on 27 Apr
📅 27 Apr 2026, 08:23 📍 Newbury, Thatcham
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Related segments — same incident

Severe M4 | Berkshire | Road Closure | Expect Delays Cleared 15:05 View → Severe M4 westbound between J13 and J14 | Westbound | Accident Cleared 15:00 View → Moderate M4 westbound between J16 and J17 | Westbound | Congestion Cleared 11:55 View →
M4 4 related
Severe Accident ↺ 25h 23m
M4 J16 westbound access | Westbound | Accident
Location : The M4 westbound entry slip at junction J16 . Reason : Accident involving a vehicle that has left the carriageway. Status : Currently Active. Time To Clear : The event is expected to cle
📅 26 Apr 2026, 18:42 📍 Swindon, Royal Wootton Bassett
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Related segments — same incident

Moderate M4 westbound between J15 and J16 | Westbound | Congestion Cleared 22:10 View → Severe M4 | Wiltshire | Carriageway Closure | Expect Delays Cleared 06:20 View → Severe M4 westbound between J16 and J17 | Westbound | Accident Cleared 20:05 View →
M4
Moderate Accident
M4 westbound between J13 and J14 | Westbound | Congestion
Location : The M4 westbound between junctions J13 and J14 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 21:15 and 21:30 on 26
📅 26 Apr 2026, 10:49 📍 Newbury, Hungerford
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M42
Severe Accident
M42 northbound between J2 and J3 | Northbound | Accident
Location : The M42 northbound between junctions J2 and J3 . Reason : Road traffic collision. Status : Currently Active. Lanes Closed : There are lane closures.
📅 26 Apr 2026, 03:38 📍 Redditch, Dorridge
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M4 3 related
Severe Accident
M4 J14 westbound access | Westbound | Accident
Location : The M4 westbound entry slip at junction J14 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 22:00 and 22:15 on 26 Apr
📅 26 Apr 2026, 03:38 📍 Hungerford, Newbury
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Related segments — same incident

Severe M4 | Wiltshire | Carriageway Closure | Expect Delays Cleared 08:50 View → Moderate M4 westbound between J14 and J15 | Westbound | Accident Cleared 22:10 View →
M4 2 related
Severe Accident
M4 westbound between J17 and J18 | Westbound | Overturned Vehicle
Location : The M4 westbound between junctions J17 and J18 . Reason : Accident involving an overturned vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 02:
📅 24 Apr 2026, 19:33 📍 Royal Wootton Bassett, Swindon
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Related segments — same incident

Severe M4 westbound between J17 and J18 | Westbound | Congestion Cleared 20:30 View →
M4
Severe Accident
M4 westbound within J7 | Westbound | Accident
Location : The M4 westbound at junction J7 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expec
📅 24 Apr 2026, 10:23 📍 Burnham, Slough
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M45
Severe Accident
M45 westbound between M1 and A45 near Rugby (east) | Westbound | Accident
Location : The M45 westbound between the junctions with the M1 and the A45 . Lane Closures : Lane two is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The ev
📅 24 Apr 2026, 01:53 📍 Rugby, Daventry
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M4
Severe Accident
M4 eastbound between J11 and J10 | Eastbound | Accident
Location : The M4 eastbound between junctions J11 and J10 . Lane Closures : Lane four is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected
📅 23 Apr 2026, 15:23 📍 Reading, Theale
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M4
Severe Accident
M4 westbound between J4B and J5 | Westbound | Accident
Location : The M4 westbound between junctions J4B and J5 . Lane Closures : Lane four is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected t
📅 23 Apr 2026, 07:29 📍 Iver, Staines
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M4
Severe Accident
M4 eastbound between J17 and J16 | Eastbound | Accident
Location : The M4 eastbound between junctions J17 and J16 . Lane Closures : Lane three is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected
📅 21 Apr 2026, 11:00 📍 Swindon, Royal Wootton Bassett
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M42
Severe Accident
M42 northbound between J8 and J9 | Northbound | Accident
Location : The M42 northbound between junctions J7A and J9 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : T
📅 21 Apr 2026, 07:58 📍 Atherstone, Coleshill
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M42
Severe Accident
M42 southbound between J10 and J9 | Southbound | Accident
Location : The M42 southbound between junctions J10 and J9 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 00:15 and 00:30 on 2
📅 20 Apr 2026, 21:14 📍 Tamworth, Atherstone
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M40 2 related
Moderate Accident
M40 southbound between J5 and J4 | Southbound | Congestion
Location : The M40 southbound between junctions J5 and J4 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 20:30 and 20:45 on 19
📅 19 Apr 2026, 18:29 📍 High Wycombe, Princes Risborough
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Related segments — same incident

Moderate M40 southbound between J5 and J4 | Southbound | Accident Cleared 21:15 View →
M4
Severe Accident
M4 J3 eastbound exit | Eastbound | Accident
Location : The M4 eastbound exit slip at junction J3 . Lane Closures : Lane one is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clea
📅 19 Apr 2026, 13:49 📍 Hounslow, Feltham
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