PC Blakelock curled up in a ball and screamed for help as a mob hacked him to death during the Broadwater Farm riots, an eyewitness has told the Old Bailey.
Using the pseudonym John Brown and with his voice distorted by a modulator to protect his identity, the witness described how he saw the killing on the estate in Tottenham, north London, on October 6 1985.
He explained that he had seen Nicky Jacobs, 45, stabbing PC Blakelock with a machete between two and four times as the frenzied mob took part in a "free for all".
More top news
A man with no recollection of who he is has been found in London, with police appealing for help to identify him.
London Underground has made a new offer to unions to try and avert next week's tube strike. But will it work? Here's what you need to know
The Metropolitan Police has responded to allegations that they refused to enter the water to rescue a teenager who was drowning