Olly Stephens was stabbed to death in Reading just three days into 2021. Photo: Thames Valley Police.
Police officers stand guard near a crime scene in Leyton, east London where a teenager was fatally stabbed in 2019. Photo: Luke Dray/Getty Images
Snapchat has become a toxic zone where knives, tit-for-tat abuse and extreme violence is on display 24/7. Photo: Snapchat/Supplied
Police at a cordon on Oxford Street near the scene where a teenager died after being stabbed in London's West End in 2020. Photo: Dominic Lipinski/PA Images via Getty Images
Flowers left at a housing estate in Milton Keynes, Buckinghamshire, where two teenage boys were stabbed to death in 2019. Photo: Gus Carter/PA Images via Getty Images
Forensic officers enter a shop on Smethwick, West Midlands after a teenager was chased into a shop and stabbed to death in May 2021. Photo: PA Images via Getty Images
Police in Stratford, east London after a male teenager was fatally stabbed shortly after 3pm in October 2019. Photo: Aaron Chown/PA Images via Getty Images
Knife used in the attack on Anas Mezenner, 17, who died from a 15cm deep wound in Haringey, north London in January 2021. Photo: Met Police
A message left outside a shop in Shepherd's Bush, west London, where detectives launched a murder inquiry after a teenager was stabbed to death in 2019. Photo: Helen William/PA Images via Getty Images)
An image released by the Met Police of machete-wielding suspects after a 17-year-old was stabbed in Hyde Park in June 2021. Image: Met Police
