Police were called at 4.48pm on Wednesday, 7 December to reports of a stabbing in Hawthorne Road, Bromley.
Officers attended along with the London Ambulance Service. An 18-year-old man was found with a stab injury. He was taken to the hospital where his condition was assessed as not life-threatening.
No arrests have been made and enquiries are ongoing. Anyone with information is asked to call 101 quoting CAD 5214/07Dec. To remain anonymous contact the independent charity Crimestoppers on 0800 555 111.