Police are asking witnesses to come forward after a man had his cheekbone broken outside Alexandra Palace rail station.
The victim was treated in hospital for a fractured cheek bone.
The attacker, believed to be aged around 30, is described as European-looking with a tanned complexion, over six feet tall and of large build. He had medium length black hair and a stubbly beard. At the time of the incident he was wearing a dark blue or black jacket which was open, with a dark top underneath and blue jeans and trainers.
Anyone who witnessed the assault, or has any information, is asked to call Det Con Jay Abbott of Haringey CID on 101 quoting CRIS 2809939/14. Alternatively, to remain anonymous, call Crimestoppers on 0800 555 111.