The Security Commonwealth is an umbrella organisation of independent membership bodies across the security industry. It provides a forum to consult and co-operate in the common interest and in the promotion of professionalism, best practice and information sharing to enhance UK security.

The Security Commonwealth aims to be the all-inclusive industry advocate on security issues in the UK, to create lasting networks and alliances and to promote and lead the security industry with a single voice.

Membership includes most of the major security membership organisations in the UK, such as ASIS UK, the Security Institute, the International Professional Security Association, the Association of Security Consultants, the Institute of Private Investigators, and the Cross-sector Security and Safety Communications. 

Other members include the National Security Inspectorate, the British Security Industry Association, the Royal United Services Institute, Crime Prevention Associations, Project Griffin, National Cyber Security Alliance and Resilience First. 

Sector based membership organisations include Sister Banks, the Pharmaceutical Industry Security Forum (PISF), the National Association for Healthcare Security, the British Institute of Facilities Management and many other organisations covering all security disciplines including counter terrorism, physical security, personnel security and cyber security.