Three teenagers have been jailed over the killing of PC Andrew Harper.
The three teenagers were found guilty at the Old Bailey in central London last week.
Henry Long was sentenced to 16 years in prison, and Bowers and Cole handed jail terms of 13 years each.
The judge, Mr Justice Edis, said on Friday his role was to impose a sentence against the teenagers responsible for PC Harper’s death which reflected “the seriousness of this case and protects the public”.
He described the killers as “young, unintelligent but professional criminals”, and said none of them had “shown anything resembling remorse”.
“You killed a talented and brave young police officer who was going above and beyond his duty in order to provide a public service,” he told them.