Police are appealing for witnesses to a serious single-vehicle collision.

It happened at 1.29am yesterday (Saturday) on the Alkham Valley Road at the junction for Alkham, Dover, involved a grey BMW 320i.

The car is understood to have hit a wall.

The driver of the car, a man in his 20s, suffered minor injuries and was taken to a local hospital for treatment.

All three passengers, one man and two women, were taken to a London hospital with serious injuries. They all remain in a stable condition.

Investigating officer Det Con Aaron Hammond from the Serious Collision Investigation Unit, said: ‘We are appealing for witnesses who may have seen the collision or the vehicle beforehand and have yet to speak to officers.’

Witnesses are asked to phone the dedicated SCIU witness appeal line on 01622 798538 quoting reference number AH/137/17. Alternatively email sciu.td@kent.pnn.police.uk