Janayo Lucima was found injured by emergency services in Comeragh Road at around 10.15pm on April 1.
He was pronounced dead at the scene just before 10.55pm.
A 22-year-old man appeared at Westminster Magistrates’ Court today (April 8) charged with murder.
He has been remanded in custody to next appear at the Old Bailey on April 10.
Two other males, aged 17 and 22, were also arrested on suspicion of murder today.
The pair were taken to police custody where they remain.
Police will return to the scene this evening to distribute leaflets as they continue to appeal for new information.
Detective Chief Inspector Brian Howie, from the Met’s Specialist Crime Command, leads the investigation and said: “Despite the progress we have made in terms of the charge and arrests, this is still very much a live and ongoing investigation and we need the public’s assistance.
“We know there was a group of males, on foot or on a bike, in the area at the time of the shooting – we need to trace these people and I would ask anyone who has information that could help us, and has yet to get in contact to please do so with urgency.
“Were you in the area of Comeragh Road, Barton Road and Palliser Road towards Barons Court Tube Station between 9.40pm and 10.30pm?
“This continues to be a fast-paced and complex investigation as we work tirelessly to identify all those responsible for Janayo’s murder and provide family with the answers they deserve.”
Anyone who witnessed this incident or has information, but has not yet spoken with police, should call 101 or post on X @MetCC quoting CAD 6709/01Apr.
To remain 100 per cent anonymous call the independent charity Crimestoppers on 0800 555 111