The London Ambulance Service was called to the busy Kilburn High Road around 8.20pm last night (June 30).
An ambulance crew arrived with London’s Air Ambulance, fast-response paramedics and an incident response officer.
A male patient was treated at the scene and taken to hospital.
Pictures show the incident happened near the junction with Netherwood Street.
The condition or age of the victim is not yet known, but the Met have been contacted for further information.
A London Ambulance Service spokesperson said: “We were called at 8.23pm yesterday (30 June) to reports of a stabbing in Kilburn High Road, NW6.
“We sent an ambulance crew, paramedics in fast response cars and an incident response officer to the scene. We also dispatched London’s Air Ambulance.
“We treated a patient at the scene and took him to a major trauma centre by road.”
