Police are searching for a man who punched another man following a World Darts Championship game while dressed as a lobster.

The victim, who is in his twenties, was knocked unconscious outside Alexandra Palace in north London on 13 December and is still suffering from “significant injuries”.

The Met Police have now released CCTV footage taken at the venue in the hope of identifying the suspect and bringing him to justice.

He is believed to have been part of a larger group of men who attended the tournament while dressed in lobster costumes.

At 4:30pm, the victim encountered the group at the entrance to the venue and an argument broke out, with security at the site intervening.

Shortly afterwards, they encountered each other again and the victim was punched on the venue’s concourse.

He was taken to hospital where his injuries were assessed as non-life-threatening but serious and he reported the incident to the police.

Detective Constable Lizzie Coster, who is leading the investigation, said: “Our thoughts are with the victim in this case, and we hope the best for his recovery.

“This assault occurred outside at a major sporting event, and the suspect was wearing a distinctive costume.

“We are releasing a CCTV image of the suspect in the hope that it will jog the memory of attendees, or anyone else who was in the area at the time.”