A police officer is in a critical condition at a west London hospital following a collision in Neasden in the early hours of Sunday (December 17).
Two police officers - one male and another female - were seriously injured in a road traffic collision on the A406 North Circular Road in Brent which involved a white Maserati.
In a statement, Metropolitan Police confirmed the male officer sustained serious injuries and is in a critical condition.
The female officer has sustained a number of fractures and her condition is serious but stable.
A woman in her 40s, who had been in the car, was not seriously injured but remains in hospital.
All were taken to hospital by London Ambulance Service.
The two police officers involved were returning to a marked police vehicle parked on the A406 before they were seriously hurt in the collision.
The Maserati driver, a man in his 50s, was arrested at the scene on suspicion of dangerous driving and failing to provide a specimen of breath and remains in custody at a north London police station.
A woman in her 40s, who had been in the car, suffered minor injuries but remains in hospital.
A friend of the officers set up a crowdfunding page which people can look and donate to here.
Anyone who witnessed the collision or has information that may assist police should contact the Serious Collision Investigation Unit at Alperton on 020 8991 9555 or via Twitter @MetCC. To give information anonymously contact Crimestoppers on 0800 555 111 or online at www.crimestoppers-uk.org.
Keep up to date with the latest news in west London via the free getwestlondon app.
You can set up your app to see all the latest news and events from your area, plus receive push notifications for breaking news.