Essential Security Industry Accreditations and How to Get Them
A guide to the key accreditations for UK security companies, their benefits, and the process for achieving them.
By Michael Bryce · 8 March 2026 · Updated 11 March 2026 · 2 min read
Accreditations provide independent verification that your security company meets recognised standards. They’re increasingly used as qualifying criteria in tenders and as differentiators in competitive markets. Understanding which accreditations matter for your business and how to achieve them is a strategic investment.
SIA Approved Contractor Scheme (ACS)
The ACS scheme is the most relevant accreditation for manned guarding companies. It demonstrates compliance with SIA standards across operational procedures, staff management, and service delivery. Many public sector and large corporate tenders require ACS status as a minimum qualification.
ISO 9001 — Quality Management
ISO 9001 certification demonstrates a systematic approach to quality management. The certification process involves documenting your processes, implementing a quality management system, and undergoing external audit. While resource-intensive to achieve, ISO 9001 signals operational maturity that resonates with corporate clients.
SafeContractor and CHAS
These health and safety accreditations are commonly required for security companies working on construction sites and in industrial environments. The application process involves demonstrating your health and safety policies, procedures, and track record. They’re relatively straightforward to achieve if your health and safety management is already robust.
Living Wage Employer
Accreditation as a Living Wage employer demonstrates commitment to fair pay. With increasing public and corporate interest in ethical procurement, this accreditation can differentiate your company positively, particularly in public sector tenders where social value is weighted in evaluations.
Cyber Essentials
As security companies increasingly use digital systems containing sensitive client data, Cyber Essentials certification demonstrates that your IT security meets government-backed standards. It’s a requirement for some government contracts and a reassuring credential for any client concerned about data security.
Prioritising Your Investment
Don’t chase every accreditation at once. Start with ACS if you don’t already have it. Then prioritise based on your target market: ISO 9001 for corporate clients, SafeContractor for construction, and Cyber Essentials if you handle sensitive data. Each accreditation should support your business strategy, not just collect logos. Robust BS7858 screening processes underpin many of these accreditations by ensuring your workforce meets the required vetting standards.
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Michael Bryce
Founder of TacDesk. Writes about SIA compliance, operations, and running a UK security company — from someone who actually works the shifts.
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