Police are appealing for the public's help to identify a man who may be able to help with unsolved transport crime in the capital.

An appeals gallery has been launched by the Metropolitan Police Roads and Transport Policing Command, of CCTV images of people they would like to identify following crimes committed on London's transport network, including one in Croydon.

The image is of a man and relates to a sexual assault on June 12 this year in High Street, Purley.

If members of the public have any information about the man they should call police on 020 3054 5500 or Crimestoppers anonymously on 0800 555 111 and quote reference number 153321.