Police have released footage showing a "vicious and unprovoked" attack on a young man on a night out in Shoreditch, east London which left him with a broken nose and fractured eye socket.
The 26-year-old victim was outside the Be At One bar in Old Street when a man stood beside him suddenly and unexpectedly punched him in the face.
The CCTV clip of the assault shows the victim almost instantly fall to the ground as his attacker then proceeded to kick him in the face.
The suspect, whose face was caught clearly on another camera as he drank with others before the attack, then fled the scene heading east along Old Street.
Partygoers and door staff came to the victim's aid as ambulance and police were called to the scene.
The injured man was taken to Royal London Hospital where he was treated for serious facial injuries, including a broken nose, fractured eye socket and broken tooth. His vision has also been damaged.
The Met Police is appealing for anyone with information or who recognises the man in the footage to come forward.
The incident happened at around 1.45am on Sunday, 8 October.
The suspect is described as black, of medium build with short dark hair; and wearing a dark blue shirt and black bomber jacket. He was seen inside the bar with a group of men and women shortly before the assault.
DC Vicki Henderson, of the Hackney Violent Crime Unit, said: "This was a violent and completely unjustified attack on an innocent man enjoying a night out; which left him with serious injuries – including a broken nose, fractured eye socket and broken tooth. His vision remains affected.
"The suspect is clearly a dangerous individual who needs to be apprehended. I would appeal to anyone who recognises the man in the footage or witnessed the incident to contact my team."
Anyone with information or who witnessed the incident is asked to call detectives on 07825 793212 or contact via Twitter @MetCC.
To give information anonymously contact Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.