LISTEN: Stepdad 'My son was stabbed 8 times, 4 times through the heart, it even came out his back...over a ripped jacket' #Nottingham #KnifeCrime
Capital's been told young children are being groomed to carry weapons in the East Midlands.
Police figures show the number of under 18's caught with a knife in Derbyshire has more than doubled since 2014.
It's a three year high across the region with children as young as 7 carrying a knife into school in Leicestershire.
John Spencer, who set up a charity in memory of his murdered stepson Jason, says people who carry knives are not 'ninja warriors', and it won't protect them: