Police are looking for witnesses after a violent assault left a man blind in one eye.
Ali Doostizadeh, 37, from New Southgate had gone to Alexandra Palace with friends on New Year's Eve when he attempted to break up a fight. The victim was hit in the face with a bottle.
Officers believe people taking photos on the day may have an image of the suspect.
The suspect is describe as Asian, aged in his late teens, 5ft 10ins tall with dark brown hair. He was wearing an orange and white striped coat.