Officers are investigating an incident of a man who masturbated while filming a woman on a south-east London train last month.
On Friday October 15 at 11.15pm, the man boarded a train at Kent House station, headed towards Sydenham Hill.
He sat opposite a woman on an otherwise empty carriage and began to masturbate under his trousers. The woman also noticed he was filming her on his mobile phone at the same time.
She walked away after the man then exposed himself. He left the train at Sydenham Hill station.
Police officers have released an image of a man they want to speak to in connection with the incident.
If you recognise him, or have any information, contact the British Transport Police by texting 61016 or calling 0800 40 50 40 and quoting reference 51 of 16/10/21.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.
These really should be some way of making women safe on the trains at night because these predators are becoming more and more common . Femail only carriages after 9.00 with CCTV would help . I know coming into E&C late at night on the tube I am often the only one in a carriage. Its a shame mayor Khan took away the officers who were responsible for our protection at night and assigned them to bike stealing duties.