Police have released CCTV images of a man they would like to speak to after a violent assault at Harrow on the Hill station on July 24.
The incident happened just before 2pm when the 22-year-old male victim was walking through the station ticket area where he bumped into a man.
The man, who had already provoked an altercation with a group of men on the station stairs, immediately became hostile to the victim and proceeded to punch him several times and then kicked him as he fell to the floor.
A member of staff intervened and stopped the assault, but the victim was left unconscious and sustained cuts, bruises and a broken cheek bone.
Detective Constable Chris Church, of the British Transport Police (BTP), said: "This was a seemingly unprovoked assault and it is important this violent individual is brought to justice.
"Aggression such as this will not be stood for and we will take all necessary steps to prosecute offenders. Therefore, I’d encourage anyone who has any information, or recognises the man in the CCTV images to contact us.”
"I would also like to thank the brave member of staff who intervened and stopped the man attacking this victim. Had he have not done that, the injuries could have been far worse."
Anyone with information is asked to contact BTP by text on 61016 or by calling 0800 405040 quoting reference 204 of 9/8/2016.
Alternatively, information can be passed anonymously to independent charity Crimestoppers on 0800 555111.
