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M4 J1 at 08:50 on Monday 12 October: 1 nearby.
Straight from National Highways, re-checked every 3 minutes while this page is open.
Location from the National Highways junction reference. Nearest towns: Twickenham, Hounslow, London, Hayes.
Wider area: counting every road within 3 miles — local streets, A-roads, everything — 8,003 collisions are on record, 34 of them fatal. That figure follows how built-up the area is, so it is shown for context and is not what the ranking uses.
Department for Transport STATS19 police collision records on the M4 itself, within 2 miles of J1. This is the free summary — the full breakdown by severity, weather, road surface, time of day and individual record is in the blackspot report.
📊 Full collision analysis for M4 J1 → 47 of 49 junctions on the M4 · see where it ranks nationallyM4 J1 is at Chiswick & Brentford. National Highways signs it as Chiswick. The nearest town is Twickenham.
Not at M4 J1 itself as of 08:50. Nearby, National Highways report: The M4 eastbound between junctions J3 and J2. Congestion. Currently Active (1 junction away).
No closure is listed at M4 J1 as of 08:50.
Police STATS19 records show 11 collisions on the M4 within 2 miles of J1, including 0 fatal and 2 serious. Counting every road in the area, 8,003 collisions are recorded within 3 miles. That ranks it 519 of 554 UK junctions we hold collision records for.
Live incidents, roadworks and delays for the whole M4, updated every 5 minutes from National Highways.
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