Met Police and IOPC duck questions on PC Ryan Gadsden death thisislocallondon.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thisislocallondon.co.uk Daily Mail and Mail on Sunday newspapers.
The London mayoral hustings was suspended for 20 minutes when Andreas Michli, an independent mayoral candidate, repeatedly shouted out the names of murdered teenagers.
Machetes and zombie knives should be completely banned in the UK, the Mayor of London said, as he called on the Government to speed up plans to curb availability of the weapons.
The 56-year-old blasted Mr Khan in a foul-mouthed rant after it emerged last week that more than 1,000 people have been killed in London since he became mayor.