A ‘courageous’ policeman was stabbed with a knife after being called to a disturbance in north London last night.

The Met Police officer was described as “extremely lucky” after escaping the incident in Harefield, Greater London, without serious injury.

Officers were called to the home on Dovedale Close at 2.44am on Sunday following reports of a “disturbance”.

Upon arrival, they were confronted by a man who threatened them with a knife before stabbing the policeman in the arm.

The officer has now been treated in hospital for non-life threatening injuries.

The attacker was subdued with a Taser and arrested on suspicion of GBH and affray.

A Met Police statement said: “Police were called to Dovedale close, Harefield at to reports of a disturbance just after 2.40am on Sunday morning.

“Officers attended and could hear a disturbance coming from inside the premises.

“A man opened the door, armed with a knife and was threatening officers.

“The man then stabbed one of the male officers in the arm. A taser was deployed on the man and he was detained.

“The officer was taken to hospital, where he was assessed and his stab wound was treated. His injuries are not life threatening.

“A 34-year-old man was arrested for assault on an emergency service worker causing Grievance Bodily Harm and affray and remains in police custody.”

DCI Thomas Bowen, West Area Basic Command Unit said: “These officers were courageous and extremely lucky that they were able to walk away from this incident with minimal injuries.

“This is an example of the dangers that our officers face, whilst doing their role as police officers.”