Thames Valley Police is releasing a CCTV image of a man they would like to speak to in relation to a sexual assault investigation.
Between 11.20pm and 12am on Saturday 29 September this year, a woman was on the Stagecoach S6 bus from Gloucester Green in Oxford to Swindon.
The woman, in her 20s, was sitting next to a man who allegedly assaulted her. The victim did not know the man and was left feeling shaken and vulnerable by the incident.
It is believed that the man got off the bus at Fleming Way in Swindon.
Investigating officer PC Julie Nutland, based at Didcot police station, said: “I would like to speak to the man in this image, as I believe he may have vital information regarding this incident. If anybody recognises this man, please call 101"