Police have released CCTV footage of a man suspected to be behind a series of violent unprovoked attacks in Hoxton last November.
The footage shows him walking away moments after punching an unsuspecting man unconscious on Hoxton Street shortly after midnight on 29 November last year.
The Metropolitan Police also wish to speak to him in connection with two further assaults on men in Hoxton Square later on the same evening.
The suspect is described as a white man, aged in his mid-20s, 6ft tall with short blond hair. He was wearing a grey cardigan, dark coloured jeans and white trainers.
Anyone with information about the incident is asked to contact Detective Constable Anwen Clissold via 101, quoting reference 4628812/14, or call Crimestoppers anonymously on 0800 555 111.
