The Mirror reports.The witness told the outlet the officer begged “please help me”. He said: “"He was kneeling onto the other officer and then went back on to the ground."I then supported his back with my body so he could open his zip."He was lucky.
He could've died. He was screaming and crying."The community reverend said a medic from the London Ambulance Service treated the officer, who he believes broke his arm.
He said he came across the scene at around 2am on Thursday, just minutes after emergency services descended on a reported stabbing.
Read more on dailystar.co.uk