ISO 27001 is the international standard for information security management, setting out a framework of policies and controls that help organisations manage the security of company and customer data systematically, covering people, processes and technology rather than just technical tools.
How ISO 27001 works
ISO 27001 is built around an Information Security Management System (ISMS), which starts with a formal risk assessment and defines a set of controls covering areas such as access control, supplier relationships and incident management. Organisations must maintain ongoing monitoring, carry out internal audits and hold management reviews, with certification granted by an accredited external body. It is a more comprehensive framework than Cyber Essentials Certification, which offers a lighter, UK-specific baseline rather than a full management system.
How UK businesses use ISO 27001
- A business pursuing contracts with larger organisations or the public sector achieves ISO 27001 certification to demonstrate a mature approach to information security to prospective clients.
- An IT team uses the ISO 27001 risk assessment process to systematically identify and prioritise information security risks across the organisation, rather than addressing issues ad hoc.
- A company maintains its ISO 27001 certification through annual surveillance audits, showing continued compliance with the standard's requirements.
- An organisation compares ISO 27001 against Cyber Essentials when deciding which certification best matches its current security maturity and the expectations of its customers.
How Advantage supports ISO 27001 readiness
Advantage helps SMEs prepare for ISO 27001 certification, supporting the technical controls, policies and monitoring an Information Security Management System depends on, alongside broader managed IT and cyber security services.
Frequently Asked Questions
What is the difference between ISO 27001 and Cyber Essentials?
Cyber Essentials is a lighter, UK-specific certification focused on a baseline set of technical controls, while ISO 27001 is a more comprehensive international standard covering a full information security management system, including policies, risk management and ongoing review.
Is ISO 27001 certification mandatory?
No, it is voluntary, though some clients, particularly larger organisations and public sector bodies, may require suppliers to hold it as part of their procurement process.
How long does ISO 27001 certification last?
Certification is typically valid for three years, subject to annual surveillance audits by the certifying body to confirm ongoing compliance.
