Attack reignited concern around the ongoing problem of knife crime that has plagued the British capital for years.

The defendants, who cannot be named, boarded the bus 20 minutes later each armed with identical machetes hidden in their clothes.

Two machete-wielding teens who smiled as they fatally stabbed 14-year-old aspiring rapper Kelyan Bokassa on a bus 27 times in a 14 second attack have been jailed for life.

Attack reignited concern around the ongoing problem of knife crime that has plagued the British capital for years.