A 16-year-old boy has been jailed for his role in an afternoon of frenzied violence in which one person was shot and two others stabbed.
The teenager, who is from Croydon but can not be named for legal reasons, was sentenced to 18 months of youth detention for playing a part in the huge fight.
He was found guilty of violent disorder at Croydon Crown Court on November 1.
Four other teenagers were also jailed on Friday for playing a part in the fight in Beckenham Hill Road, Catford, following an investigation by the Metropolitan Police's anti-gang unit.
Anuar Niyangabo, 18, of Inchmery Road, Catford, was sentenced to 13 years in prison for unlawful wounding and possession of a firearm with intent to cause fear of violence and violent disorder.
Omar Suliman, 19, of Worsley Bridge Road, Beckenham was jailed for 11-and-a half years for possession of a firearm with intent to cause fear of violence and violent disorder.
Both pleaded guilty on September 19.
Two 17-year-olds, from Lewisham and Bromley, were given six-month youth detention and trainings after admitting violent disorder.
A 16-year-old Lewisham boy was handed a two-year conditional discharge after pleading guilty in June to possessing an offensive weapon, a rounders bat.
No further action was taken against four others arrested.
Detective Sergeant Simon Mitchell, of the Metropolitan Police's Trident Gang Crime Command, said the teenagers involved had been "intent on causing harm to each other".
He said: "Thankfully all three victims have made a full recovery. However, we hope today's sentencing sends a clear message that Trident will always act upon information given to us about those involved in this type of criminal activity, and will hold to account those who choose to carry weapons and who are involved in gang violence.