Detectives investigating the murder of 15-year-old Jay Hughes, from Bellingham, have released an image of him as they continue to appeal for witnesses to the attack.
The teenager was fatally stabbed on Randlesdown Road, Bellingham at around 17:22hrs on Thursday 1 November.
He was taken to a south London hospital but was pronounced dead at 20:15hrs.
A post-mortem examination was held at Greenwich mortuary on Sunday, 4 November and his cause of death was given as a single stab wound to the heart.
Detective Chief Inspector Chris Soole, of the Met's Homicide and Major Crime Command, said: "I'm hoping the release of Jay's image will help to jog the memory of those in and around the Randlesdown road area in Bellingham on the night of his murder.
"My team continues to work around the clock to apprehend those responsible for this callous attack, which cost a young boy his life.
"I'd urge anyone with information, no matter how insignificant they believe it is, to do the right thing and get in contact with us as soon as possible.
“I appreciate that there may be a reluctance to speak with police but I can assure you that we will treat all information given to our Major Incident Room in the strictest of confidence. Alternatively, you could speak anonymously to Crimestoppers."
Anyone with information that may assist the investigation is asked to call police on 0208 345 3734.
To remain anonymous, call Crimestoppers anonymously on 0800 555 111.
You can also tweet police via @MetCC