Police want to find a man who trapped a girl in the bathroom of a fast food restaurant before exposing himself to her.

The alleged incident happened at a Paddington branch of Burger King at 6.30pm on April 15.

The 16-year-old went to use the facilities at the Praed Street restaurant when she was followed into the ladies toilet by a man.

After she emerged from the cubicle he jammed his foot in front of the exiting door, preventing her from leaving, before exposing himself and making sexually indecent gestures to the victim.

He then escaped through a fire exit on the first floor.

Westminster police are investigating the allegation of indecent exposure and false imprisonment.

The alleged suspect is white, aged between 30-35, stocky, 5ft 11ins tall, with short black hair and facial stubble. He is believed to be of eastern European origin.

He was wearing a black jacket with black jeans and shoes.

Detective Constable David Roberts, from Westminster’s Major Crimes Unit, said: “This type of crime is very upsetting to the victim. I am keen for anyone with information to come forward. We will treat all intelligence received in the strictest confidence and will investigate every lead.”

Anyone with any information can call Westminster CID on 101 or Crimestoppers anonymously on 0800 555 111.