Police want to speak to a man in connection with an attack which left a bouncer with a broken jaw.
The attack, at 1am on January 20 at the Harrow Inn, Cheam, was following a leaving party.
According to police, the private party was a for a girl who was leaving for Australia.
A number of men and women, aged in their early 20s, were leaving a private party in a sectioned off area of the pub when a man punched the member of the door staff by the fire exit door, which is a few feet away from the main entrance.
The victim suffered a broken jaw and was treated in hospital.
Police want to speak to the man in white trousers on the far left of the image.
Detective constable Lee Cook, of Sutton CID, said this was an unprovoked attacked by a man, who is likely to be known to many people who attended the party.
He said: "We want someone at the party to come forward and tell us who committed this serious assault."
If you know who this individual is, or have any information that could help police with their investigation, contact detective constable Cook on 020 8649 0630.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.