A man has been left with a bleed on the brain after being punched and kicked in the head during a brutal assault at London Bridge station.
The victim was hospitalised after being attacked by a group of men at London Bridge underground station on August 20.
He had tapped through a barrier to exit the station when a man tailgated behind him alongside two other men who tapped through, British Transport Police said.
Following a brief altercation between the men, the victim was punched to the face multiple times and kicked in the head.
He was taken to hospital and found to have sustained a bleed to the brain.
Detectives have released an image of a man they wish to speak to in connection with the assault. One man has already been arrested and released under investigation.
Police believe the man in the CCTV image may have information that could help their investigation.
Anyone who recognises him is asked to contact BTP by texting 61016, or by calling 0800 40 50 40 quoting reference 40 of 20 August.