Police investigating a fatal stabbing in Fulham have issued a description of a man who was in the area at the time of the attack.
Nathaniel Armstrong, 29, was stabbed to death in the early hours of Saturday morning.
Just days earlier, his cousin, Good Morning Britain weatherman Alex Beresford, had delivered a powerful speech on air about the state of knife crime in the UK.
Mr Beresford paid tribute to Mr Armstrong as a "bright young man" who was "yet one more example of a needless life lost to knife crime.”
Police are now trying to track down a “light-skinned black male” who left the scene on Gowan Avenue shortly after the attack.
Detective Chief Inspector Glen Lloyd, from the Homicide and Major Crime Command, said: "I am still eager to hear from anyone who was in the area of Gowan Avenue shortly after midnight on Saturday.
“Any information you have could be vital in establishing what happened that night.
"My team is particularly keen to trace a male who was seen near the scene at the time of the incident.
“He was described as a light-skinned black male, approximately 6ft tall with facial hair on his cheeks and a moustache.
“He was wearing a brown bomber style jacket and following the stabbing he left the scene in the direction of Fulham Road.
"Did you see him? Do you know who he is? Anyone with information on his identity or whereabouts is urged to contact police."
Enquiries including forensic analysis and the review of local CCTV footage at the time of the incident continue.
There have been no arrests.
Any witnesses, or anyone with information, is asked to call the police incident room on 0208 358 0100. To remain anonymous, call Crimestoppers on 0800 555 111. You can also tweet police via @MetCC.
