M25 | Hertfordshire | Carriageway Closure | Exp… — Cleared 24 Aug

What happened

The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.

RoadM25

SeveritySevere

StatusCleared

DirectionAnti-clockwise

Started04:36, 24 Aug 2026

Cleared06:21, 24 Aug 2026

04:36, 24 AugFirst report
The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.
04:41, 24 AugUpdate
The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.
05:11, 24 AugUpdate
⏱ Still active — no changes from National Highways. Incident ongoing for 35 minutes. Monitoring continues.
05:16, 24 AugUpdate
The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.
05:51, 24 AugUpdate
⏱ Still active — no changes from National Highways. Incident ongoing for 1h 15m. Monitoring continues.
05:56, 24 AugUpdate
The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.
06:21, 24 AugUpdate
✅ Incident cleared — M25 reopened at 06:21 on 24 Aug 2026. Total disruption: 1h 45m. All lanes open, traffic returning to normal.
07:42, 6 NovFinal update
The M25 in Hertfordshire is closed anti-clockwise between J22 (London Colney) and J21a (St Albans) due to a collision involving a car and a lorry.

Wording from National Highways, recorded as it changed.

Enter when you were on the M25 to check.