Police have released an image of a man they would like to speak to in connection with a sexual assault on a Central line train.

Officers said that just before 8pm on February 20, a man sat next to the victim on a Central line service before sexually assaulting him.

The victim subsequently got off the Tube at Leytonstone Underground station and sat on a bench.

A short time later, the same man approached him and asked: “Do you want to play?”

The British Transport Police said that the man pictured in the new CCTV image may have information that could help with their investigation.

Anyone who recognises him is asked to contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 621 of 20 February.

Alternatively, members of the public can contact Crimestoppers anonymously on 0800 555 111.