Ranked · 8 of 10 assessed
Ordered by Agency List ScorePenetration testing and security audits for web and mobile applications
Managed IT support, cyber security, and consultancy for Derbyshire small businesses
ISO27001 certification support, security healthchecks, and risk documentation for UK organisations
Cybersecurity consultancy with 24/7 operations and enterprise architecture expertise
Protecting digital assets with encryption and cybersecurity services
Cybersecurity consultancy and managed security services provider
Empowering businesses with AI, cybersecurity, and telecom solutions
Managed IT support, cloud and security for accountants, legal and engineering firms
Also in United Kingdom · 6 not ranked here
4 have not yet been assessed on the Agency List Score. Alphabetical.About this ranking
What this page ranks
This page ranks 8 of the 10 assessed cybersecurity agencies in United Kingdom — the ones carrying a published score — out of 14 listed.
The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.
Cohorts and awards
Agencies are compared within a cohort — here, Cybersecurity in United Kingdom. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 10, so the strongest award available here is top 25%.
The 4 cybersecurity agencies not yet assessed are listed on this page but not ranked.
A further 2 were assessed and no published evidence of their work was found, so no score is shown for them.
Paid placement
Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.
Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.
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Services in United Kingdom
Questions
- How many cybersecurity agencies are in United Kingdom?
- 14 are listed on Agency List in United Kingdom. 10 of them have been assessed on the Agency List Score as of October 2026, and 8 of those carry a published score.
- Which cybersecurity agency in United Kingdom is ranked highest?
- Pentesting, with an Agency List Score of 73.4, ranks #1 of 10 assessed agencies in Cybersecurity in United Kingdom.
- Why are 6 cybersecurity agencies listed here but not ranked?
- 4 of the 14 listed have not yet been assessed on the Agency List Score. A further 2 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
- How is the ranking determined?
- By Agency List Score, within the Cybersecurity in United Kingdom cohort of 10 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.