Police searching for man after teenage girl sexually assaulted on board train
The British Transport Police (BTP) have released an image of a man they want to speak to after a teenage girl was sexually assaulted on board a train last month.
The assault took place on board a Northern line Tube train between Stockwell and South Wimbledon on February 19.
At around 11.15pm a man made sexual remarks to a teenage girl before sitting next to her and sexually assaulting her.
Other passengers intervened and the man left the service at South Wimbledon.

The BTP believe the man in the CCTV images may have information that could help their investigation.
Anyone who recognises the man in the CCTV, or who has any other information, is asked to contact the British Transport Police by texting 61016 or by calling 0800 40 50 40 quoting reference 20 of 19 February.
Alternatively, you can call Crimestoppers, anonymously, on 0800 555 111.
Pictured top: A CCTV image of the man police want to speak to in connection with the assault (Picture: BTP)