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.

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How Tempo Audits Keeps Costs Transparent

Use automation tools for evidence collection.

  1. Prepare ISMS documentation internally before engaging an auditor.

  2. Choose a UKAS-accredited body to avoid repeat audits from clients or partners.

  3. 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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