This work, covering a period of 183 years, lists all constabulary members killed in the territorial area which is now Northern Ireland. Included are members of the Ulster Constabulary, the Constabulary of Ireland, the Londonderry Municipal Police, Royal Irish Constabulary, Ulster Special Constabulary, Royal Ulster Constabulary, Police Service of Northern Ireland, Belfast Harbour Police and the Irish Revenue Police.
Details of how to get it are in the PDF file attached.