A man was airlifted to hospital after a “serious” crash which blocked a motorway in Hertfordshire for hours.
The London Fire Brigade was called to the clockwise M25, between junction 24 for Potters Bar and junction 25 for Enfield, with reports of a crash involving a motorcycle and lorry at 5.01pm yesterday (September 21).
The motorway closed back to junction 23 for the A1(M) to make it safe for emergency services to work.
Police began letting some vehicles caught in the closure past in one lane by 8pm, but the clockwise carriageway did not fully reopen until investigations were completed at around 10.45pm.
The M25 is closed clockwise between J23 (Hatfield) and J25 (Enfield) following a serious RTC.
Emergency services and the air ambulance are on scene.
There are delays of up to 60 minutes on the approach to the scene. pic.twitter.com/HHjSrOYAEm— National Highways: East (@HighwaysEAST) September 21, 2026
Some anticlockwise closures were also put in place to support emergency services.
National Highways confirmed the air ambulance was on the clockwise carriageway at around 6.30pm and had left to take the man to hospital by 7.20pm.
Met Police, rather than Herts Police, responded to the incident. The force has been contacted for more information.
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The East of England Ambulance Service has also been contacted for information.
Updates to follow.
Did you see what happened? Get in touch via email to fintan.mcguinness@newsquest.co.uk.
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