WATCH: The terrifying moment a man threatens police officers with an 8 inch knife

PC Alex Prentice and PC Debbie Wishart were called to a house in Corby in Northamptomshire where they encountered Lee Vickers, 37, who began acting aggressively.
In the video filmed from PC Prentice's body camera, you can see Vickers run towards the officers brandishing an eight-inch knife.