Police have launched a £20,000 reward appeal to help identify and locate a man wanted in connection with the murder of film student Finbar Sullivan, who was surrounded and stabbed to death on Primrose Hill in London. The reward reflects the seriousness with which investigators are treating the case as they seek public assistance to bring those responsible to justice.

Details of the attack remain limited, but police have confirmed Sullivan, a film student, was fatally stabbed after being surrounded by an assailant or group on Primrose Hill. The substantial reward is intended to encourage anyone with information about the man sought by detectives to come forward.