The Metropolitan Police said the officer suffered non-life threatening injuries after the incident, in Edgware. Police were called to the address at 10.25am today after reports of a suspect in the garden of a house in Manor Park Crescent.
On arrival they found a man in the garden, and after he was approach, the suspect stabbed the officer in the face with a pen.
The woman was taken to hospital where her injuries are still being assessed.
A 39-year-old man was arrested at the scene on suspicion of breach of bail in addition to offences against the officer including threats to kill and GBH.
A female police officer has been stabbed in face with a pen in North London
Manor Park Crescent in Edgware, where the attack occurred
Police used a taser to detain him.
He too has been taken to hospital for treatment.
Roy Smith, BCU Commander for North West London, said: “Sadly this is yet another reminder of the risks faced by our police officers as they respond to calls for help from the communities of London.
The Met have tweeted about the attack
The men and women of the Met go to work each day not knowing the dangers they may face
“The men and women of the Met go to work each day not knowing the dangers they may face.
“They run towards danger to protect others and their everyday heroism is something all Londoners should be proud of.
“This officer was subjected to a vicious and unprovoked attack.
Roy Smith, BCU Commander for North West London
“These are our police officers and they have family and loved ones to return home to.
“They deserve not only our admiration but also support.”
Police Officers were victims of 10,399 alleged assaults which caused injuries last year, according to the Office of National Statistics – up 32 percent since 2015/16, when the figure was 7,903.
The incident happened in Edgware in North London
In an unrelated incident in Haruphey in Greater Manchester yesterday, three officers were stabbed after an attack in the early hours of the morning.
A spokesman for Greater Manchester Police said: “Shortly before 4.25am on Saturday 15 August 2020, police were called to Kingsbridge Court on Kingsbridge Road to reports of a man causing a disturbance, smashing up cars with a metal pole and in possession of a knife.
“In detaining the man, three officers were injured and received treatment at hospital, with one male officer sustaining injuries believed to have been caused by a knife.
“The man – aged 24 – was tasered and subsequently detained. He is under arrest on suspicion of assault and criminal damage.
“He is currently being treated in hospital for minor injuries.”