Three officers were trying to detain the man in Romford Road at around 4.30pm yesterday and the group ended up stumbling into oncoming traffic which narrowly missed them.
Several people stood by watching, with some filming the incident on their phones and others cheering on the suspect as he made his escape.
Scotland Yard says two people were arrested after the officers were allegedly threatened with a firearm.
They had stopped a car in Romford Road and spoke to two men inside the vehicle.
The pair then got out and a struggle took place with two officers being injured and taken to hospital.
One sustained a broken bone in her right hand while the other requires surgery to ligament damage in his hand.
A 25-year-old man was arrested at the scene and a 23-year-old man was arrested after fleeing officers and hiding in a garden in Grantham Road.
No firearm has been recovered but police say their searches are ongoing.
Detective Superintendent Sean Yates of the Met’s Violent Crime Task Force, said: “This incident once again demonstrates the bravery of Met officers, who have acted with the utmost professionalism in a difficult situation.
“Acting on instinct when approaching a suspicious car, they were confronted with two aggressive men who have intimated that they were armed.
“The officers put themselves in harm’s way to protect the public and I would urge anyone with any information to come forward.”
Anyone with information is asked to contact Trident on 101 quoting CAD 4921/16 Aug, via @MetCC or Crimestoppers anonymously on 0800 555 111.Tags: Newham, Manor Park
© TIME107.5fm 2015-2020. All rights reserved.