Police want to identify this man after two women were sexually assaulted on busy London Underground trains this summer.
On May 8, a woman was sexually assaulted on board a Circle line train at Liverpool Street station.
Then on July 1, a different woman was sexually assaulted on board a Victoria Line train at Seven Sisters underground station, said the British Transport Police.
Detectives said they are investigating a series of sexual assaults on the Tube network and are treating the two sex attacks as linked.
The man pictured “may have information” which could help with the investigation, a British Transport Police spokesperson said.
Anyone who recognises him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 612 of 1 July.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.