Two police officers were struck by a white 4x4 car driven at them near Camden Market in the early hours.
The pair were responding to reports of a man with a knife at around 2.30am.
They attempted to speak to the suspect, who then got into the vehicle, drove it at them, then fled the scene.
Both officers were taken to hospital where there injuries were tended to. They have both been discharged.
BCU Commander for Camden and Islington Raj Kohli said: “Our officers go to work every day to protect Londoners and the many visitors to the capital. Last night, two of these officers attempted to carry out a routine stop after concerns were raised by a member of the public that a man had a knife.
“This man drove a car towards the officers without any consideration for what the outcome might be. It is only a matter of luck that neither officer suffered even more serious injuries than those they sustained."
Scotland Yard is appealing for information to trace the car which made off on Adelaide Road towards Swiss Cottage.
The driver of the car is described as a black male, around 6ft tall with a beard.
He was wearing black clothing and a beanie hat.
The passengers are described as two black females. One was wearing high heel black boots, a black leather jacket and red skirt, while the other was wearing dark clothing including a long skirt and black boots. She had her hair in a ponytail.
There have been no arrests.
Police are asking anyone with information to call 101 quoting CAD 866/29Dec or Crimestoppers anonymously on 0800 555 111.
