Police are hunting these three late-night suspects after a doorman at a high-end bowling alley was slashed to the head and face.
The 42 year-old security supervisor was approached by the trio at All Star Lanes, Porchester Gardens, Bayswater at 2.45am on October 29.
Following a brief altercation, the victim was violently assaulted and sustained multiple cuts and slashes to his head and face.
He was taken to a central London hospital for medical treatment.
He has now been discharged.
Detective Constable Tom Aylward, of Westminster's Serious Crime Unit said: "This was a shockingly violent attack on a door supervisor who was just trying to do his job.
“There is no justification for such violence and it is only by good fortune that his injuries were not more serious.
"It is very important that these men are identified as soon as possible so that we can speak with them about the assault."
Anyone who can assist in identifying either of the men pictured is asked to call Westminster CID via 101.
Alternatively, they can call Crimestoppers anonymously on 0800 555 111.