A policeman stabbed in the head and body during a "frenzied" machete attack is expected to make a full recovery, his bosses have said.
The patrol officer, who is in his 30s, was attacked after trying to stop a van suspected of having no insurance in Leyton, east London, at around midnight on Thursday.
The vehicle's 56-year-old driver was Tasered by the officer despite him being seriously injured in the "sudden and brutal" assault which lasted just seconds, Scotland Yard said.
Witnesses described the attacker being pinned to the ground as he was arrested by another officer, who was not armed with a Taser, before being bundled into a police van after more than a dozen emergency vehicles arrived on the scene.
Julia Hartley-Brewer and Mike Graham speak to youth-crime campaigner Alison Cope, former police officers Norman Brennan and Chris Hobbs and take some of your calls on knife crime.
