A 17-year-old boy was mown down by a gang of teenagers in a stolen car before they chased him and stabbed him 15 times, a court has heard.

Lord Promise Nkenda was walking along a pavement in Newham, east London, on Valentine’s Day when five people in a BMW accelerated towards him.

A jury of six men and six women at the Old Bailey heard on Monday that Promise was struck by the car, which had been stolen hours earlier. The teenager got to his feet and fled but the car pursued him until he ran down an alleyway, when four people got out of the vehicle and gave chase.

The group caught him in Goldwing Close, Canning Town, where they stabbed him 15 times before getting back in the car and escaping.

Prosecutor Alan Kent QC told the Old Bailey that Promise was deliberately run down by a car containing Shemar Dawes, Ephraim Idris, Anton Muir, Ishaq Abdille and a 15-year-old boy who cannot be named for legal reasons.

Kent added: “Promise was deliberately run down by a stolen car. He managed to get up, having been run down by that stolen car and he ran. But he was chased by that car. He ran down a pathway, thinking that that would stop the chase.

“As Promise ran down the pathway in order to try to escape, the car stopped, four of the defendants got out of the car and chased him down that pathway and into a residential area where he was caught and stabbed.”

The court heard that Promise was repeatedly stabbed in the head, back and chest in an attack lasting only a few seconds.

He managed to knock on a nearby door and the occupants raised the alarm. But despite paramedics battling to save his life, he was pronounced dead at the scene at about 8.40pm on Wednesday 14 February.

Dawes, Idris, Muir, Abdille, now all aged 18, and the juvenile all deny one count of murder.

The jury was shown footage of the car striking Promise before chasing him through the streets. Kent told the court the car had been stolen by two men hours before the attack.

He said that although it was not known who was driving or who had stabbed the teenager, the group was acting together.

He added: “Promise was attacked by all of them. All of them were in the car when it was used deliberately as a weapon when it drove at Promise in an attempt clearly to cause him really serious harm.

“And when he, Promise, ran down that alleyway to try to avoid and escape from that car, four got out and chased him on foot. They assaulted Promise, chased him and stabbed him.”

He said it is still not known if the attack was a case of mistaken identity or if Promise was deliberately targeted.

Kent added: “We don’t know the motive but what we do know was that Promise was killed and he was killed by the group of defendants. They each share responsibility for his death. They were clearly a party to a violent attack on him intending that he suffer at least serious harm or to kill him.

“He stood no chance against that car and equally he stood no chance against the four who chased him down the alleyway and stabbed him to death.”

The court heard that the stolen BMW was found crashed, and a knife and pair of latex gloves were later discovered behind a nearby telephone junction box. Kent said the knife had Promise’s DNA on it, while one of the gloves bore Dawes’s DNA.

The prosecutor told jurors that the knife also fitted a sheath that was found near the attack and had Idris’s DNA on it.

After recovering the stolen car, police found a rucksack in the boot containing the juvenile’s Oyster card and drinks container with his DNA on it, the court heard.

All five were arrested and gave no-comment interviews, although Abdille gave police a prepared statement denying being part of the attack.

Kent told the jury that Idris, Muir and the juvenile accept they were at the scene but deny murder. He said Abdille and Dawes both deny any presence or involvement during the attack.

The trial continues.