Transport police are urgently trying to identify a man who is wanted in connection to the sexual assault of a teenage boy on the London underground.

Officers would like to identify the man pictured after the teenage boy was sexually assaulted on August 28 at around 6.30pm.

The victim, a 15-year-old boy, was sexually assaulted by a man on two occasions on the Central Line between Stratford and Leyton.

The man then followed the victim off the train at Leyton and tried to engage him in sexual conversation.

Officers believe the man in the image may have information which could help their investigation.

If you recognise him, or witnessed what happened, you can contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 640 of 28/08/19.

Alternatively you can call Crimestoppers anonymously on 0800 555 111.