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Location from the National Highways junction reference. Nearest towns: Staines, Ashford Middlesex, Egham, Iver.
Wider area: counting every road within 3 miles — local streets, A-roads, everything — 1,645 collisions are on record, 19 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 M25 itself, within 2 miles of J15. 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 M25 J15 → 4 of 33 junctions on the M25 · see where it ranks nationallyM25 J15 is at Heathrow & Colnbrook. National Highways signs it as M4 Interchange. The nearest town is Staines.
Live incidents for the whole M25 are listed on the M25 traffic page, updated every 5 minutes from National Highways.
Police STATS19 records show 130 collisions on the M25 within 2 miles of J15, including 3 fatal and 16 serious. Counting every road in the area, 1,645 collisions are recorded within 3 miles. That ranks it 13 of 554 UK junctions we hold collision records for.
Live incidents, roadworks and delays for the whole M25, updated every 5 minutes from National Highways.
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