Officers arrest crazed knifeman who stabbed female police officer

Moment officers arrest a crazed knifeman who stabbed a female police officer. Declan Diedrick left one officer with an injury to her face which required urgent hospital treatment in an attack in Harlow on 29 December 2023. He was found guilty of causing grievous bodily harm with intent by a jury at Chelmsford Crown Court on 30 October 2025.