The London ambulance service paramedics were alerted to the incident in Archway Underground Station at 6.13 AM this morning (April 25).
The ambulance equipment and a paramedic in a fast response car were sent to the scene, where the British transport police temporarily closed the station.
A man was found suffering in his leg and was treated on the scene, before being tasks of an important trauma center as a priority.
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A spokesman for the London ambulance service said: “Today they called us at 6.13 AM (April 25) for reports of a stabbing in Archway Underground Station, N19.
“We send an ambulance team and a paramedic in a quick response car to the scene.
“We treat a man on the scene and take him to an important trauma center as a priority.”