A woman was killed by a car as she was walking in the early hours of the morning.

The woman aged 38 was hit by a silver Toyota Avensis at 4.22am on the A41, Watford Bypass East of the junction with Kenilworth Road.

The woman died at the scene, and though they believe they know who she is they are waiting for formal identification.

The driver stopped at the scene and was not arrested.

Officers from the Serious Collision Investigation Unit at Alperton Traffic are appealing for witnesses to call on 020 8991 9555 or contact Crimestoppers by calling 0800 555 111 or visiting www.crimestoppers-uk.org.