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A1(M) J1 at 07:48 on Monday 12 October: nothing reported at this junction — live National Highways updates every few minutes.
Straight from National Highways, re-checked every 3 minutes while this page is open.
Location from the National Highways junction reference. Nearest towns: South Mimms, Potters Bar, Borehamwood, Barnet.
Wider area: counting every road within 3 miles — local streets, A-roads, everything — 846 collisions are on record, 12 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 A1(M) 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 A1(M) J1 → 3 of 19 junctions on the A1(M) · see where it ranks nationallyA1(M) J1 is at South Mimms & Potters Bar. National Highways signs it as South Mimms. The nearest town is South Mimms.
No — as of 07:48 National Highways list nothing at A1(M) J1. This page re-checks their live feed every few minutes, 24 hours a day.
No closure is listed at A1(M) J1 as of 07:48.
Police STATS19 records show 29 collisions on the A1(M) within 2 miles of J1, including 3 fatal and 6 serious. Counting every road in the area, 846 collisions are recorded within 3 miles. That ranks it 95 of 554 UK junctions we hold collision records for.
Live incidents, roadworks and delays for the whole A1(M), updated every 5 minutes from National Highways.
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