A drill rapper who pointed a sawn-off shotgun at police while wearing a clown mask during a dramatic car chase across London was jailed for 23 years today.

Lekan Akinsoji, 21, aka CB, and three other gang members were pursued by officers after they embarked on a "ride out" to target rivals in east London, the Old Bailey heard.

Akinsoji was caught on camera waving a gun out of the window as they drove through narrow residential streets, over speed bumps, at up to 60mph.

Officers, including one who described the white mask as reminiscent of the Hollywood film Heat, opened fire, believing their lives were in danger, jurors were told.

In dramatic dashcam footage played in court, an officer could be heard shouting "Gun. Gun. They've got a gun. They are pointing a long barrelled weapon at us."

The chase came to an end when the BMW was driven the wrong way down a one-way street in Leytonstone.

Akinsoji emerged from the car wearing a "frightening" clown mask and all four gang members were wearing gloves and had their faces either partially or fully covered.

A fifth man, who was behind the wheel, fled on foot and was not arrested, the court heard.

Police seized an arsenal of weapons, including a loaded sawn-off shotgun, two lock knives, an axe, a machete, a hunting knife and a zombie knife.

Officers described the terrifying incident, with one saying: "I was in fear. What was happening was overwhelming."

Akinsoji was linked to the Woodgrange or "E7" gang from Forest Gate, east London, the court heard.

The court heard before the ride out, Akinsoji had posted a drill rap video on YouTube that glorified gang culture and rivalry with the E11 gang.

He was on trial alongside Nathaniel Lewis, 23, Darnell Joseph-Newill, 21, who went by the rap name D Boy, and Troy Ifill, 22.

They were said to be associated with east London gangs who had formed an alliance under the name "Northside Newham".

Prosecutor Anthony Orchard QC had told a jury the defendants had armed themselves and set out in the stolen car to cause really serious injury or death to a rival gang.

Following a trial, the defendants from east London were found guilty of possession of a firearm with intent to endanger life and conspiracy to cause grievous bodily harm with intent.

They were each jailed by Judge Mark Dennis QC to 23 years plus three years on extended licence.

The judge said the defendants, who all had previous convictions, had armed themselves with lethal weapons and made a "determined attempt" to cause "extreme violence".

He said: "Drill music glorified gang violence and challenged rivals gangs. The offending conduct was a reflection of such lyrics."

The judge told the defendants: "You are all comparatively young men. However, over a long period you had been attracted by and engaged in an urban culture that embraced violence and blights communities."

He imposed the lengthy jail sentences in spite of a plea by one defence barrister for a "measure of mercy".

Mitigating for Ifill, Sam Stein QC said: "We are in these courts locking up too many young black men in circumstances all too similar."

He said jail seemed not to be achieving a deterrent effect on young men in the community.

Family members wept in the packed public gallery as the men were sent down.

The defendants had smiled and gestured to their supporters but were heard to shout as they were led away from court.