POLICE are appealing for witnesses and any dashcam footage following a fatal collision on Hillingdon Hill on Saturday evening (13).

They were called at 9.21 to reports of an overturned silver BMW M5.

The 42-year-old female passenger was pronounced dead at the scene, while the driver, aged 34, was taken to hospital. His condition is not believed to be life-threatening.

It is believed the BMW may have collided with railings before overturning. There has been no arrest at this stage.

Witnesses are urged to call 020 8246 9820 quoting CAD 7283/13nov.