Their renewed appeal follows the one-year anniversary of Jonah Ho-Shue’s death on January 4, 2024.
Officers from the Metropolitan Police were called to Albert Road at 10.43pm that evening with reports of a serious assault.
The 24-year-old was discovered injured having suffered a stab wound to his arm, and he died at the scene.
Since the launch of the investigation, the Met has made several arrests in connection to Jonah’s death.
Three men aged 23, 24 and 25, and two women aged 25 and 29 have been arrested on suspicion of murder and remain under investigation.
A fourth man has been released without further action.
Information that leads to the identification, arrest and prosecution of those responsible will be met with a reward of up to £20,000.
Jonah’s family shared their own updated appeal. They said: “It’s hard for me and my family and his friends to talk about Jonah in the past tense.
“He should be here, we should be talking about him in the present.
“He was a loving brother, son, cousin, uncle and a grandson and our hearts are broken. I wouldn’t want anybody to go through what we’ve been through as a family.
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“I’m appealing for anybody who has information, even if you think it’s small, please come forward, please ease my family’s pain by doing the right thing.”
Anyone with information about what happened is asked to call the incident room on 020 8345 3715 or via 101 quoting Operation Bardcole.
To remain anonymous contact the independent charity Crimestoppers on 0800 555 111.