A 17-year-old boy was stabbed after a mass “unauthorised gathering” of teenagers in Clapham.
Metropolitan Police were called to Clapham Common on Friday after fighting broke out at an alleged music event, which was heavily promoted on TikTok.
Footage circulating on social media shows a large police presence, with dozens of vehicles stationed around the park.
Officers could be seen dispersing the group, as nine arrests were made.
A 17-year-old boy was rushed to hospital with stab wounds, where his injuries were found to be non life-threatening or life-changing.
A spokesperson for Met Police said: “We were called on Friday, 22 May to an unauthorised gathering on Clapham Common.
“The group were dispersed by officers after fighting broke out in the crowd, following this we made nine arrests.
“A 17-year-old boy was taken to hospital after he was found suffering with stab wounds.
“His injuries were assessed as neither life-changing nor life-threatening.
“All of those arrested remain in police custody.
“We urge anyone who was at the event or who has any information to come forward to police by calling 101 and quoting CAD8948/22May.
Large police & ambulance presence at Clapham Common pic.twitter.com/kq02gNs8oF
— Tara Goodsell (@Tara__Goodsell) May 22, 2026
“A police presence will remain in the area, and we’ll be reviewing CCTV and other evidence in the coming days.”
Four boys — one aged 16, two 17 and one 19 — were arrested on suspicion of affray.
Two boys, one 16 and one 14, were arrested on suspicion of grievous bodily harm and affray.
Two people — a 20-year-old man and a boy aged 15 — were arrested on suspicion of possessing a knfie.
An 18-year-old was arrested on suspicion of assaulting a police officer.
All of those arrested remain in custody, the Metropolitan Police said.
