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At a glance

🕐 Last verified 12 Jun, 15:28

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StatusLive
Severity (NH)Severe
RoadM4
DirectionWestbound
RegionWestbound
Category (NH)Crash
ReportedFri 12 Jun, 15:28
Road typeMotorway
Speed limit70 mph (variable)
Weather🌦️ Light drizzle
ReferenceREF-26085023
Views142

Times are UK time.

What National Highways say

M4 westbound between J19 and J20 | Westbound | Accident

Location : The M4 westbound between junctions J19 and J20 . Lane Closures : The hard shoulder is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 16:30 and 16:45 on 12 June 2026. Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 12 June 2026.

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142 updates captured · Cleared

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M4  · Westbound J19 to J20 ✓ CLEARED

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Also on the M4 today

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Recent M4 incidents

182 incidents and roadworks logged on the M4 in the last 30 days, 56 of them serious or severe. Times are UK time.

M4 | Berkshire | Carriageway Closure | DelaysWed 9 Sep, 21:42 M4 | Berkshire | Carriageway Closure | Long Delays 30 minutesWed 9 Sep, 21:42 M4 | Greater London | Carriageway ClosureWed 9 Sep, 01:27 M4 | Gloucestershire | Road Closure | Expect DelaysWed 2 Sep, 22:45 M4 | Wiltshire | Carriageway Closure | Expect DelaysSat 15 Aug, 02:59 M4 | Wiltshire | Carriageway Closure | Expect DelaysThu 6 Aug, 09:35
Every M4 incident

Common questions

Is the M4 closed?

Not fully. There were lane closures on the M4 westbound J19 to J20 at 16:47 UK time on Tue 3 Nov 2026. See the M4 right now.

What happened on the M4 on 12 Jun 2026?

Crash on the M4 westbound J19 to J20 in Westbound, reported at 15:28 UK time on Fri 12 Jun. Lane closures. Still live.

Where can I see everything else on the M4?

The M4 live page shows what is happening now, and the M4 archive has every incident on record.

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