The Prince will give a reading and lay a wreath at the service, taking place at the Metropolitian Police's memorial garden in Hendon.
It'll be led by the Bishop of Edmonton Rt Rev Robert Wickham and the Met Police's senior chaplain, Jonathan Osborne.
650 officers and staff have died at work during the Met's long history.
Among the guests with be the families, friends and colleagues of those who have died and the force's Commissioner, Sir Bernard Hogan-Howe, and London mayor Sadiq Khan, who also lay wreathes and give speeches.
Each of the families attending will have the opportunity to honour their loved ones before the prince spends time with the relatives during a reception following the service.
