Two car crashes happened at the same time and place this morning.
Both took place at Apex Corner, in Mill Hill, shortly after 9.10am.
One crash was between a car and a lorry, in which the female driver of the car was taken to a north west London hospital for a minor head injury.
The second was between two cars, in which one of the drivers was treated by staff from London Ambulance Service for back pains.
Police were called at 9.17am, and part of the roundabout was closed, with traffic directed towards Stirling Corner.
No arrests were made.
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