Detectives have released an image of a man they would like to speak to in connection with an allegation of indecent exposure on a bus in the Notting Hill Gate area.
The incident occurred on Friday, 25 November 2016 at approximately 16:30hrs on a Route 94 bus as it drove towards Notting Hill Gate, W8.
The suspect boarded the Routemaster bus at Holland Park, W8 and sat on the lower deck at the back of the bus, opposite a 12-year-old girl.
He then put his hand down the front of his trousers and exposed himself to the girl.
The girl was extremely upset by the incident and exited the bus at the first opportunity.
When she got home she told her parents about the incident and they called the police.
The suspect is described as a white man, aged between 30 and 40 years, with short dark thinning hair. He was described as wearing a dark jacket and blue fitted jeans.
The incident is being investigated by detectives from the Met's Roads and Transport Policing Command.
Anyone with information is asked to contact Detective Constable Cara Newton on 07766 248 387 or Crimestoppers anonymously on 0800 555 111.
Alternatively you can tweet @MetCC with any information.