Swindon Police have issued a CCTV image of a man they want to speak to in connection with an assault in Old Town.
It happened at around midnight on Saturday night - 16 October - at Longs Bar in Victoria Road.
A force spokesperson said: "The victim, a man in his 30s, was assaulted in the smoking area by a man who hit him across the face and head. He suffered cuts and bruises.
"The suspect is described as white, around 5ft 10ins tall, with short brown hair. He was wearing a light-coloured t-shirt.
"We appreciate the CCTV isn’t the best quality, but we are hoping that someone who knows the man pictured will recognise him."
Anyone who recognises the man in the image is asked to call PC Kayne Borresen on 101, quoting crime reference 54210102012.
Alternatively, they can call Crimestoppers anonymously on 0800 555111.