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Severe Blackspot · 2,643 combined incidents · 29 fatal · Showing full road data
Based on collision frequency, severity ratio, fatalities, and casualty count.
📍 Each pin marks an actual police-recorded collision location · Zoom in and click for details
Get the complete police collision breakdown, severity charts, weather analysis, danger score, speed limit data, and trend data for M25 junctions.
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Data Sources: DfT STATS19 police-recorded collision data and National Highways incident data, both under Open Government Licence v3.0. This is historical DfT statistical data — not an official police report. Blackspot classification is algorithmic and not an official safety assessment. © 2026 UK Traffic Updates.