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
Rowan Atkinson slipped back into character for the 25th anniversary of Mr Bean and took his mini for a spin outside Buckingham Palace.
A woman believed to be in her 60s has bee killed after being hit by a lorry in Peckham High Street, police said.
Researchers from Imperial College London believe they have found a cure for motion sickness.