M25 anti-clockwise shut after lorry blaze sparks chaos in Hertfordshire
The M25 anti-clockwise between Junction 25 (Waltham Cross) and Junction 24 (Potters Bar) is currently closed following a lorry fire. Emergency crews, including Hertfordshire Fire & Rescue, are battling the blaze while National Highways Traffic Officers tackle snarled traffic. Expect major delays.
Follow the Official Diversion
To dodge the closure, look out for the hollow square symbol on signs and follow this route:
- Exit M25 at Junction 25
- Take first exit onto A10 southbound at the roundabout
- Continue on A10 to Great Cambridge Junction with A406 North Circular
- Follow A406 westbound to junction with A1
- Turn right on A1 northbound
- Stay on A1 northbound to Junction 23 of M25
- At roundabout, take first exit to rejoin M25 anti-clockwise
Watch Out For These Hazards
- Low bridge ahead on diversion route (4.7m / 15.4ft). High vehicles must seek alternate routes.
- Route passes through London’s Low Emission Zone — some vehicles may incur charges.
Plan Your Journey Now
Delays are expected. If you’re travelling this way, plan ahead or consider postponing your trip.
For live traffic updates, visit www.trafficengland.com, check National Highways’ apps and Twitter, or call their 24/7 contact centre on 0300 123 5000.
