A teenage girl has gone missing after being seen on a train in Amersham.

Stevie Bascombe, 16, was last seen on the train heading towards London at around 11.50pm last night (Saturday).

She is 5ft 9ins tall, with a medium build. She has dark brown straight hair just below the shoulder.

She was last seen wearing blue jeans, a black tracksuit top, a black baseball cap, white trainers, and she has a nose piercing.

Police officers are urgently trying to find Stevie and say they are concerned for her welfare.

They are appealing to the public to look out for her and if they see anyone matching her description, to call police immediately.

They are also asking Stevie to get in touch if she sees this appeal as officers want to check she is ok.

Anyone with information can call 101 quoting reference 43180059421 or Crimestoppers anonymously on 0800 555 111.