23-year-old Rijkaard Siafa was stabbed to death in Fellmongers Yard in April 2024.
Two men have been jailed for 27 years each for their part in the murder.
But 29 year old Jordan Vincent (pictured), believed to be from south London, remains at large.
Detectives are appealing for any information that could reveal his whereabouts or lead to his arrest and conviction.
Detective Chief Inspector Samantha Townsend, who is leading the investigation, said:
“Two years on from this horrific murder, our thoughts remain with Rijkaard’s family and friends. Rijkaard lost his life at a young age due to the actions of David Walcott and Rammon Mali, two dangerous and unpredictable individuals who have now been put behind bars.
“We are grateful to those who have come forward so far to help us with our investigation. It is clear from those enquiries that the defendants acted as a team to find and viciously attack Rijkaard.
“We are renewing our appeal to the public for their help in finding the outstanding suspect, Vincent, wanted for Rijkaard’s murder. Any information could help us trace his whereabouts.
“My team will continue to work tirelessly to bring all those responsible to justice. We are determined to do so and appeal for those who could help to come forward.”
Hassanatu Bah, Rijkaard’s mother, said:
“Rijkaard was deeply loved and is missed every day. Even after two years, the pain has not changed.
“We are grateful for the police support throughout. We are asking anyone with information to please come forward.
“No family should have to go through this. We just want answers and justice for Rijkaard.”
Anyone who has information or footage can call the police incident room on 0208 721 4961 referencing Op Biscot.
To remain 100% anonymous, call the independent charity Crimestoppers on 0800 555 111 or visit Crimestoppers-uk.org.
