A man was taken to hospital after he was stabbed in the back.
Paramedics found he had small stab wound to his back.
The teenager was treated at the scene before he was taken to hospital to treat his wound.
The police have confirmed that the victim has since been discharged.
He sustained a small stab wound to his back and has since been discharged from hospital.”
Tolworth Broadway was temporarily partially closed after the incident, with Transport for London tweeting: “A240 Tolworth Broadway between Tolworth Roundabout and Oakleigh Way, lane one (of two) closed in each direction due to an emergency services incident.