Tyrone Bryan, 20 of Ely Court, Kingston was sentenced at Kingston Crown Court on Thursday, 29 October to 19 years in prison.
He had previously been found guilty of the manslaughter of 19-year-old Archie Beston.
Finlay Ahwan, 21 of Worcester Park Road, Worcester Park had been found guilty of attempted GBH on Victim 2 (with a vehicle) and dangerous driving. He was sentenced to seven years in prison.
Archie Beston had been out with friends in Kingston; at around 3.40am on Saturday, 29 February he saw an incident in which a van – driven by Ahwan – was deliberately driven towards a 19-year-old man on Clarence Street.
An investigation was launched by detectives from the Met’s Specialist Crime Command, led by Detective Chief Inspector Helen Rance.
DCI Rance, said: “Today’s sentencing is the culmination of our investigation into the tragic and needless death of a young man. No sentence can provide comfort for a family; Archie’s mother lost not only her son but her best friend.
“His family have shown such dignity over the past eight months, and the thoughts of my team remain with them.”