COPS have released a photo of a man they want to speak with following an alleged sexual assault on a train.
Police said it took place on a Jubilee Line train on June 9, just before midnight.
A woman sat next to a man on the train after boarding at North Greenwich.
The man attempted to engage her in conversation before sexually assaulting her, police said.
Both got off the train at Baker Street where the man approached the woman again.
The man eventually left the station.
Officers believe the man in the image may have information which could help their investigation.
Anyone who recognises him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 13 of 10 June.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.
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