Police want to track down a good Samaritan who went to the aid of a teenage girl after she reported being raped in a field.

The mystery man gave the victim a lift after the alleged attack in Dover in the early hours of September 18.

The victim said she was walking along Charlton Green when she met a man and a woman who offered to walk with her.

The woman left soon after but the man continued to walk with the teenager, past Connaught Park and then north along the A258 in Guston.

The man is then alleged to have raped her in a field near the A258.

Officers have now re-issued their appeal for witnesses.

Detective Constable Adam Maxfield said: "We would like to find the driver of a silver car who gave a lift to the victim between 4am and 6am on 18 September as they may have information which could assist our investigation."

A 28-year-old man from Dover was arrested on November 3 and released on bail until December 23.

Anyone with information is asked to call police on 01843 222289 quoting ZY/33785/16, or Crimestoppers anonymously on 0800 555111.