Cardinal Security continually works with regulators and appropriate awarding bodies to ensure we maintain the high standards we set ourselves.

These include being part of the SIA Approved Contractor Scheme (ACS) which we hold for the provision of Security Guarding and being a member of the British Security Industry Association (BSIA)

We have implemented a quality management system to the requirements of EN ISO 9001:2008 and currently hold the Guarding Gold status with the National Security Inspectorate (NSI) in addition to being an approved vendor with Altius.

We continually review and assess our compliance to HS&E and hold certificates with both Achilles and Safe Contractor.

Our commitment to continuous training is endorsed through our accreditation with Highfield Awarding Body Compliance (HABC) allowing us to directly carry out certified training courses.

Trade Memberships

British Security Industry Association (BSIA)

The British Security Industry Association is the trade association for the professional security industry in the UK. Its members provide over 70% of the UK security products and services and adhere to strict quality standards.

British Standards & Accreditations

NSI Guarding Gold

The combination of our 9001 Quality Management System and our relevant sector specific service of static guarding represents Cardinal Security’s Gold standard of certification. This level holds the greatest perceived value across our industry and by the police, fire and rescue services and insurers


SIA Approved Contractor

Cardinal achieved a score of 147 in our latest ACS audit. This benchmarks our high quality within the industry and shows us as performing in the top 5% of SIA Approved Contractors.

Cardinal Security currently holds SIA Approved Contractor Scheme (ACS) status for the provision of Security Guarding. Certificate No. 061951

Safety, Environment & Quality

Safe Contractor

Safe Contractor are dedicated to promoting higher standards of competence and compliance through the provision of relevant industry specific and tailored health and safety assessments for all professions and sectors.

Achilles Verify

Achilles works to identify, qualify, evaluate, and monitor suppliers on behalf of major organisations worldwide.

Altius Elite Assured Vendor

Altius assess vendors on behalf of their buyers in areas of Risk, Quality, Service, CSR and Commercial.


Highfield Awarding Body Compliance (HABC)r

This accreditation means that our Training Manager is authorised to carry out SIA certificated training courses and examinations for all employees. Further details on Highfield’s can be found at