At approximately 9pm on Tuesday, 3 August, officers on routine patrol attempted to stop a Range Rover on the A40 in Brent.
The vehicle failed to stop and was pursued.
A short time later, it was involved in a collision with another vehicle in nearby Alperton Lane.
One of the occupants of the Range Rover received non-life threatening injuries and was taken to hospital by the London Ambulance Service.
He was later arrested on suspicion of allowing himself to be carried in a stolen vehicle.
The male driver of the Range Rover was arrested for numerous traffic offences and on suspicion of theft of a vehicle.
A member of the public who had been travelling in the second vehicle also required treatment for non-life threatening injuries.
As is standard procedure in collisions following pursuits, the Met’s Directorate of Professional Standards has been informed.