The Regimental Association of the Ulster Defence Regiment
- Includes association objectives, news and details of services offered.
- http://www.udrassociation.org/

Royal Ulster Constabulary
- Dedicated to the RUC. Contains gallery, history, details of chief officers, as well as a memorial to those murdered.
- http://www.royalulsterconstabulary.org/

Superintendents' Association of Northern Ireland
- Representing the Chief Superintendents and Superintendents in the Royal Ulster Constabulary. Includes news and contact information. [Flash]
- http://www.psani.org/

The Police Federation for Northern Ireland
- Representative body of 10,500 Police Officers of the ranks below Chief Inspector serving in the Police Service of Northern Ireland. Press releases and police reform information.
- http://www.policefed-ni.org.uk/

Northern Ireland Prison Service
- Responsible for providing prison services in three Northern Ireland establishments. Information on the service's activities, responsibilities and services to the public.
- http://www.niprisonservice.gov.uk

Northern Ireland Policing Board
- Oversees policing in Northern Ireland to ensure that the service is efficient and effective. Site describes the roles and responsibilities of the Board, including publications on policing issues in Northern Ireland.
- http://www.nipolicingboard.org.uk/

Police Rehabilitation & Retraining Trust
- Organisation looking after ex-RUC (PSNI) officers, providing retraining in trade, psychological and physiotherapy backup and rehabilitation.
- http://www.prrt.org/

Police Service of Northern Ireland
- Formerly the Royal Ulster Constabulary. Site provides news, information, advice and details of job opportunities.
- http://www.psni.police.uk/