Watford Observer

M25 reopens after seven hours following serious collision


M25 shut clockwise near Potters Bar due to serious collision

By Nathan Louis and James Cowen

Last updated:

    The M25 has reopened following a serious collision.
  • The clockwise carriageway has been closed for around seven hours for a police investigation to take place.
  • Emergency services were first called to the carriageway near j25 for Enfield shortly after 1.30pm.
  • This included an air ambulance and a hazardous response unit.
  • Traffic was held on the anticlockwise carriageway to allow the helicopter to land.
  • The Met Police has confirmed that one person was taken to hospital in a potentially life threatening condition.
  • Police and traffic officers took the decision to close the M25 at j23 for the A1 causing chaos on the traffic network.
  • Thousands of drivers were stuck in the closure and on routes around Hertfordshire and north London.
  • The worst affected roads were the A406, A10, roads via Potters Bar, and the A414 between St Albans and Hatfield.
  • The M25 reopened completely shortly before 10pm.
  • See how today's breaking incident unfolded in the live blog below.