Sussex Police asked for help tracing this man today (Friday 16 January) after a sexual assault on a Brighton bus.
Officers want to talk to him about the incident on a number 1 bus from Whitehawk, heading into the centre of Brighton.
The force said that a man sat next to a 31-year-old woman on the top deck and put his arm around her. He also touched her on the leg and when she got up to get off the bus he touched her on the bottom.
He stayed on the bus when the woman got off.
The incident happened at about 7am on Sunday 19 October.
PC Russell Smith said: “We have been trying to identify the man in the CCTV for several months as we believe he could help with our inquiries but have so far been unsuccessful.
“If you know who he is or where he could be, please contact us.
“There were a number of other people on the top deck of the bus with the victim when the assault happened and we would also like to speak to them.”
Anyone with information is asked to phone Sussex Police on 101, email 101@sussex.pnn.police.uk or call the independent charity Crimestoppers anonymously on 0800 555111.