Wiltshire Police is still appealing for witnesses following the serious assault which occurred in Wood Street, Swindon, on Monday 1 April 2013.
The incident, which took place shortly before 4.45am outside The Kings Arms Hotel left Sam Rees, 27 years, with serious head injuries.
He remains in John Radcliffe Hospital, Oxford, in a serious but stable condition.
Wiltshire Police is keen to speak to the men and women pictured in the CCTV images here.
Officers are keen to stress that these people are not being treated as suspects but as witnesses who might hold vital information about the incident.
If you are pictured in these images, or know anyone who is, please contact the Major Crime Investigation Team at Wiltshire Police on 101 or Crimestoppers on 0800 555 111 where information can be left anonymously.