Brothers Kamal, 23, Sukhminder, 25 , and Michael, 28, Sohal stabbed Osvaldo de Carvalho, 22, to death in West Lodge Avenue on the evening of 24 September 2019.
The brothers had been involved in an “ongoing dispute” with Mr de Carvalho, the Metropolitan Police said.
On the night of the murder, Sukhminder and Michael met the victim and two of his friends in Twyford Gardens. The pair called their third brother, Kamal, for support and reinforcement.
Kamal came running, “brazenly” brandishing a large hunting knife as he travelled along the Uxbridge Road to the scene from his home nearby.
Antoine George, 24, who had also been in the house, went with Kamal to the scene of the dispute.
The three brothers then chased Mr de Carvalho and his two friends. However Mr de Carvalho became separated from the pair.
Witnesses described Mr de Carvalho being chased by a group of men, some armed with knives. After catching up with him the group set upon him with knives, before leaving him to die on the ground.
The three brothers left the scene and returned to Kamal’s address.
George left the area in a car which had been parked on the driveway outside Kamal’s flat.
The brothers were found guilty of Mr de Carvalho’s murder following a trial at Croydon Crown Court on Tuesday, 16 February 2021.
Reporting restrictions were imposed on the case as two other men were still to stand trial.
On Friday, 12 March at Croydon Crown Court, Antoine George, 24, was found guilty of manslaughter. Another man, Karim Azab, 25, was found not guilty of murder.
DCI Tunstall, said: “This is a particularly tragic case with Osvaldo’s family having to live with the pain of his loss. We know there had been previous hostility between these two groups and sadly that culminated in the events that unfolded that evening.
“The Sohal brothers had no qualms about arming themselves and – in Kamal’s case – running down a busy main road waving the weapon around in full view of all those around.
“They then subjected Osvaldo – who had no chance of defending himself – to a brutal and sustained attack. Osvaldo’s family, I hope, can find some comfort to their pain, knowing that these people have now been convicted.”