He said the incident took place on Friday evening in the Gospel Oak area of north London, and said it was a case of "mistaken identity", describing the officer's actions as "a completely unlawful act".

When contacted about the footage, a spokesman for the Metropolitan Police said he was aware of it and was looking into it.

Leon, who said he spent the evening in hospital due to getting glass in his eyes, said it was "complete madness" and that he is "still in shock".

"Every time he smashed the glass, fragments of glass were just ricocheting in my face," he said.

In a statement, the Metropolitan Police Service said: "MPS is aware of footage circulating on social media of an incident involving two uniformed officers in Camden.

"The incident took place at Weedington Road, NW5, at around 5pm hours on Friday.

"The footage will now be subject to an investigation by officers from the Directorate of Professional Standards (DPS).

"As soon as the MPS was made aware of the footage, the DPS was contacted immediately.