How much does ISO 27001 certification cost in the UK?
The cost of ISO 27001 certification in the UK typically ranges from £3,000 to £25,000+, depending on your organisation’s size, complexity, and certification approach. For a company with up to 500 employees, a realistic estimate is around £10,000–£12,000, especially when using a UKAS-accredited certification body like Tempo Audits.
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Factors That Influence ISO 27001 Certification Cost
1. Company Size and Complexity
Larger businesses with more locations, systems, or processes require longer audit durations—so the cost goes up. Smaller or tech-savvy companies can often get certified more quickly and cheaply.
2. Implementation Method: In-house vs Consultant
In-house: You’ll save on consultant fees but will need internal expertise, tools, and time.
Consultant-led: Speeds up the process but costs more—consultants often charge £1,000–£2,000+ per day.
3. Certification Body Fees
Costs vary between certification bodies. UKAS-accredited bodies often charge more than non-accredited ones—but offer stronger credibility and are more likely to be recognised by clients and regulators.
What’s Included in ISO 27001 Certification?
Stage 1 Audit: Readiness review (remote or on-site).
Stage 2 Audit: Full assessment of ISMS implementation.
Surveillance Audits: Annual check-ups to keep certification valid.
Recertification: Done every 3 years to renew compliance.
Tempo’s audit processes are built with your tech-stack in mind - with auditors trained-up with the tools you use
Get a better idea of your audit costs with Tempo Audits
How Tempo Audits Keeps Costs Transparent
Use automation tools for evidence collection.
Prepare ISMS documentation internally before engaging an auditor.
Choose a UKAS-accredited body to avoid repeat audits from clients or partners.
Train staff early to reduce time spent in the audit itself.
Tips to Reduce ISO 27001 Certification Cost
Use automation tools for evidence collection.
Prepare ISMS documentation internally before engaging an auditor.
Choose a UKAS-accredited body to avoid repeat audits from clients or partners.
Train staff early to reduce time spent in the audit itself.
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