This is a CCTV image of a man police would like to speak to following a serious assault at a Billericay nightclub.
Detectives are investigating the circumstances in which a 22-year-old was headbutted in the face, leaving him with a fracture to his left eye socket at the Ivory Rooms, in Laindon Road, between 11.15pm and midnight on Friday May 3.
Police believe the 22-year-old victim, who is from Basildon, had been in the Havana Bar VIP area when he accidentally knocked into someone and subsequently apologised.
But he was then headbutted in the face, leaving him with a fracture to his left eye socket.
The suspect and his friends were then ejected from the bar.
Investigating officer, Dc Andrew Rowley said: "This was a nasty and unprovoked attack against the victim which appears to have happened simply because he bumped into someone in a nightclub. He was left with serious injuries as a result.
"But the images from the CCTV are extremely good and I am hoping that someone will help us recognise this man so we can interview him in connection with the incident."
The suspect is described as a white man, about 5ft 9ins to 5ft 10 ins tall, with short brown hair, and aged about 18 to 22. He is of large muscular build and was wearing a white T-shirt with large dark lettering on the front.
Anyone with information is asked to contact Dc Rowley or his colleagues at Basildon CID on 101 or Crimestoppers anonymously on 0800 555 111.