The SIA Approved Contractor Scheme: Elevating Security Services to New Heights


In an increasingly interconnected world, security is paramount. Whether it’s safeguarding businesses, events, or public spaces, ensuring the safety and well-being of individuals and property is a top priority. To meet these demands, the Security Industry Authority (SIA) in the United Kingdom introduced the SIA Approved Contractor Scheme (ACS). This scheme plays a pivotal role in enhancing the quality and professionalism of security services across the nation. In this blog, we will delve into what the SIA Approved Contractor Scheme is, why it’s important, and how it benefits both security providers and the public.

What is the SIA Approved Contractor Scheme?

The SIA Approved Contractor Scheme, commonly referred to as the ACS, is a voluntary certification program established by the Security Industry Authority in 2006. Its primary purpose is to raise the standards of security services by recognizing and accrediting security companies that consistently meet the stringent criteria set by the SIA.

To attain ACS accreditation, security service providers must undergo a thorough assessment process, which includes a comprehensive evaluation of their operational practices, staff training, and overall commitment to excellence in the field. This accreditation demonstrates a company’s dedication to delivering high-quality security services that adhere to the industry’s best practices and legal requirements.

Why is the ACS Important?

Ensuring Quality

The ACS sets a high standard for security service providers. By requiring companies to meet specific criteria related to training, personnel management, and ethical conduct, it ensures that only reputable and capable organisations receive accreditation. This, in turn, raises the overall quality of security services available in the market.

Enhancing Professionalism

ACS accreditation fosters professionalism within the security industry. Companies that attain this certification demonstrate their commitment to providing skilled and well-trained security personnel. This not only benefits the clients but also contributes to a positive image of the industry as a whole.

Legal Compliance

The ACS reinforces legal compliance within the security sector. Accredited companies are expected to adhere to all relevant legislation and regulations, ensuring that security operations are carried out lawfully and ethically.

Client Peace of Mind

For clients seeking security services, choosing an ACS-accredited contractor offers peace of mind. They can trust that the security provider has been rigorously assessed and meets the highest industry standards, reducing the risk of subpar service.

Benefits of ACS Accreditation for Security Providers

Security companies that obtain ACS accreditation gain several advantages:

Competitive Edge: ACS-accredited companies can distinguish themselves in a competitive market, attracting more clients who value professionalism and quality.

Improved Reputation: ACS certification enhances a company’s reputation, instilling confidence in both clients and employees.

Legal Compliance: Accreditation helps security providers stay up-to-date with changing regulations, reducing the risk of legal issues.

Staff Development: ACS encourages ongoing training and development for security personnel, leading to a more skilled and capable workforce.


In an age where security is of utmost importance, the SIA Approved Contractor Scheme plays a pivotal role in ensuring that security service providers meet the highest standards of quality, professionalism, and legal compliance. By choosing an ACS-accredited contractor, clients can be confident in the reliability and expertise of their security team. For security companies, ACS accreditation opens doors to new opportunities and reinforces their commitment to excellence. Ultimately, the ACS contributes to a safer and more secure environment for everyone.

ACS Consultants is a reputable consultancy firm that specialises in assisting other businesses in obtaining various certifications such as ISO9001:2015, SIA-ACS, BS7858, SafeContractor, Internal Audit Services and more. ACS Consultants have a skilled team of experienced Internal Auditors who are up-to-date with the latest trends and best practices in their fields. ACS Consultants work closely with organisations to create tailored solutions that align with each organisation’s unique needs and requirements.

Let our experts coordinate you through the process!