Eyewitness Paul O'Brien has told GB News of the "unbelievable" fatal stabbing he witnessed on Midhurst Gardens in Uxbridge.
Speaking to GB News Home and Security Editor Mark White, Mr O'Brien said: "I was coming back just from the local shops and I see some people running from this direction of the scene towards me in a bit of a panic.
"So I then come around to the road where I could just hear commotion, I could hear many sirens and just felt something was off."
He added: "Two police cars sped down the road, jumped out, and then someone there was shouting at them to drop their weapon. The guy had his arms up, but he was walking backwards sort of towards me with his back towards me and didn't drop his weapon."
