Part of the A1 has been closed after a six vehicle pile up left a person trapped in their vehicle.
The A1 Barnet By Pass southbound is currently closed between Stirling Corner and Apex Corner due to a collision.
A total of three cars, one light goods vehicle and two heavy goods vehicles were involved in the incident, with six people also involved.
London Fire Brigade attended at 1.34pm and released one injured person who was trapped in their vehicle, who has now been taken to hospital.
London Ambulance Service treated three patients for minor injuries at the scene. They were then taken to Barnet hospital.
The road has been closed off while police investigate.
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