Two men have been convicted of murder after a 17-year-old boy was shot in the face five years ago.
Student Charlie Wright was gunned down in what is believed to have been a mistaken identity killing at a flat in Greenwich.
Scotland Yard said they believe the killing was motivated by a "turf war" over drugs - but added that there was no evidence Charlie himself had been involved in violence.
He was pronounced dead at the scene of the shooting in Calvert Road on April 23, 2010.
Hassan Hassan, 33, of Vesta Road, Brockley, and Colin Anderson, 49, of no fixed abode, were found guilty of murder, conspiracy to rob and possession of a firearm with intent at the Old Bailey today.
Mohammed Ibrahim, 26, of no fixed abode, was acquitted of murder and firearms offences but found guilty of conspiracy to rob.
Detective Inspector Mick Norman of Scotland Yard's Homicide and Major Crime Command said: "This was a complex and painstaking investigation that depended upon vital information given by witnesses, many of whom were fearful of the defendants.
"I want to thank them for their courage in coming forward and providing the evidence which has enabled Charlie's family to see his killers convicted.
"The judge praised the 'super-human dignity' of Charlie's family. I am glad they have seen justice done today."
The three men will be sentenced at the Old Bailey on Tuesday, June 23.
