Counter Terrorism
- Action Counters Terrorism
- Counter-terrorism Command (Metropolitan Police)
- Counter-terrorism Internet Referral Unit
- International Institute for Counter-terrorism
- Joint Terrorism Analysis Centre (MI5)
- UK Counter-terrorism Commentary (RUSI)
- UK counter-terrorism policy (UK Government)
- National Counter Terrorism Security Office
- Project Argus
- Project Griffin
- Security and Counter Terror Expo
Policing
- Association of Police and Crime Commissioners
- Center for Problem Oriented Policing
- City of London Crime Prevention Association
- City of London Police
- College of Policing
- EU Internet Referral Unit
- Europol
- Experience IMPACT
- Forensic and Policing Services Association
- HM Inspectorate of Constabulary (HMIC)
- Metropolitan Police
- National Crime Agency
- National Police Chiefs’ Council
- Northern Ireland Policing Board
- Police Federation
- Police ICT
- Police Oracle
- Police Service of Northern Ireland (PSNI)
- Royal Ulster Constabulary George Cross Foundation
- The Police Foundation
Defence
- ADS
- British American Security Information Council
- Defence Academy of the United Kingdom
- Defence Industry Security Association
- DefenceIQ
- Defence Science and Technology Laboratory (DSTL)
- Defence Technology Club
- International Institute for Strategic Studies
- Janes
- Joint Forces Command
- Ministry of Defence
- NATO
- NATO Allied Joint Force Command
- Royal United Services Institute (RUSI)
- UK National Defence Association
Cyber Security & Cyber Defence
- Cyber Security Research (Chatham House)
- CyCon, International Conference on Cyber Conflict
- Global Cyber Alliance
- Information Security Europe
- INCYDER, International Cyber Developments Review
- IoT (Internet of Things) Security Foundation
- ISC2 – International Information System Security Certification Consortium
- NATO Cooperative Cyber Defence Center of Excellence
- Rail Cybersecurity
- SANS Institute
- SINET, Security Innovation Network
- The National Cyber Security Centre
Chemical Biological Radiological and Nuclear (CBRN)
Stabilisation and International Development
- Department for International Development
- Stabilisation Unit (UK Government)