The assault took place at approximately 5pm on 29th August (Bank Holiday Monday) at the bus stop near the Post Office on Burdett Road.
A woman was waiting for a bus when a man came past and assaulted her in an inappropriate manner.
She resisted the assault and the man stopped – going to sit on the bus stop bench, where he then began talking to another woman who had arrived.
The man got onto the next D7 bus.
The man police are seeking is described as 5ft 7ins tall, with a short beard. He was wearing a khaki coloured top and loose trousers.
•Anyone with information is asked to contact the police on 101 or to call Crimestoppers, who will keep your call confidential, on 0800-555 111.