Posted on June 12th, 2025 | Written by
Ken Holmes.
As cyber threats continue to grow, businesses of all sizes are looking for ways to strengthen their cyber security. Two of the most recognised certifications in the UK are Cyber Essentials and ISO27001. Both show a commitment to protecting sensitive data, meeting compliance requirements, and gaining trust from clients and stakeholders.
But how do they compare? In this guide, we’ll explain the similarities and differences between Cyber Essentials and ISO27001 and help you choose the right one for your business.
What is Cyber Essentials?
Cyber Essentials is a UK government-backed scheme designed to help organisations protect themselves from the most common cyber security threats. The scheme focuses on five basic security controls that address common threats:
Firewalls and internet gateways
Secure configuration of devices
User access management
Malware protection
Applying software updates and security patches
To achieve Cyber Essentials certification, businesses work to meet the requirements of the scheme (sometimes with help from a CertiKit toolkit), and then complete a self-assessment questionnaire, which is reviewed by an IASME-accredited certification body.
The process is cost-effective and straightforward, making it ideal for smaller organisations or those new to cyber security standards.
For those wanting a higher level of assurance, Cyber Essentials Plus offers an additional layer of verification through independent testing of systems.
What is ISO27001?
ISO27001 is an international standard for implementing an Information Security Management System (ISMS). ISO27001 is in two parts. The first is the management system, which includes a set of requirements such as objectives, risk assessments, management reviews and internal audits. The second is the list of reference controls (Annex A) which cover most areas of information security fairly comprehensively. The idea of the ISO27001 standard is that you assess your own risks and then use appropriate controls to reduce your exposure down to an acceptable level.
ISO27001 certification involves a thorough annual audit by a registered certification body, making it a more comprehensive and rigorous approach to cyber security.
ISO27001 is increasingly becoming a requirement for many businesses, especially in sectors where data security, regulatory compliance, and customer trust are critical.
Key Similarities Between Cyber Essentials and ISO27001
Whilst Cyber Essentials and ISO27001 differ in scope and complexity, they share several important similarities:
Both help businesses strengthen their cyber security standing
Both provide recognised certifications that demonstrate your commitment to information security
The five controls in Cyber Essentials are also covered in ISO27001, reflecting best practice security measures
Both require annual recertification to ensure ongoing compliance
No matter which certification you choose, the result is an organisation that is stronger and more resilient to cyber threats.
Main Differences: Cyber Essentials vs ISO27001
Feature | Cyber Essentials | ISO27001 |
Scope | Focuses on five technical controls | Clauses 4-10 of the Information Security Management System (ISMS) and 93 controls in Annex A |
Geography | UK focused | Internationally recognised |
Complexity | Simple, entry-level certification | Comprehensive and strategic approach |
Cost | Lower cost compared to other certifications | Higher, based on business size and audit scope |
Certification Method | Self-assessment (optional Cyber Essentials Plus audit) | Full external audit by a registered certification body |
Which Cyber Certification Should You Prioritise?
Deciding between Cyber Essentials and ISO27001 depends on your business goals, resources, and customer expectations.
Choose Cyber Essentials if:
You operate mainly in the UK
You need to quickly demonstrate basic cyber security controls
Budget and resources are limited
You need Cyber Essentials certification for government tenders or supply chain requirements
Choose ISO27001 if:
You work internationally or handle sensitive data
You want a structured, long-term approach with an Information Security Management System (ISMS)
You have the budget and resources for comprehensive certification
Clients require ISO27001 certification for contracts or partnerships
For many organisations, starting with Cyber Essentials Plus is a stepping stone towards achieving ISO27001.
Achieving ISO27001 and Cyber Essentials Together
Rather than choosing between Cyber Essentials and ISO27001, many businesses opt to achieve both. Cyber Essentials covers the basics and demonstrates immediate action on cyber security, while ISO27001 provides a more strategic, encompassing framework for managing risks.
At CertiKit, we hold both Cyber Essentials and ISO27001 certifications. Our expertly-created and easy-to-use toolkits help businesses around the world achieve compliance to these frameworks without unnecessary complexity.
Whether you're taking your first steps with Cyber Essentials or implementing a full ISMS, CertiKit has the resources to support you and your cyber security journey.
If you're ready to strengthen your cyber security but unsure where to begin, get in touch and we’ll be happy to help you decide the next step towards a safer, more secure future for your business.
