IT Services and Support Agencies in London

3 IT Services and Support agencies are listed in London, United Kingdom. 3 have been assessed on the Agency List Score as of October 2026; the highest-ranked is GMA at 97.0.

Ranked · 3 assessed

Ordered by Agency List Score
#1 of 3 assessed
GMA
97

IT support and communications solutions for London businesses

Backup and Disaster RecoveryEndpoint and Device ManagementHelp Desk and Support
#2 of 3 assessed
Transputec
74

Delivering Managed IT and Cyber Security Services

Backup and Disaster RecoveryManaged IT ServicesMicrosoft 365 Administration
#3 of 3 assessed
Evolve
73

Managed IT services and cyber protection for UK businesses

Case Studies and Whitepapers

About this ranking

What this page ranks

This page ranks the 3 IT Services and Support agencies in London, United Kingdom that have been assessed on the Agency List Score, out of 3 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, IT Services and Support in London, 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 3, so no award can be issued here.

Read the full methodology

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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Questions

How many IT Services and Support agencies are in London, United Kingdom?
3 are listed on Agency List in London, United Kingdom. 3 of them have been assessed on the Agency List Score as of October 2026.
Which IT Services and Support agency in London, United Kingdom is ranked highest?
GMA, with an Agency List Score of 97.0, ranks #1 of 3 assessed agencies in IT Services and Support in London, United Kingdom.
How is the ranking determined?
By Agency List Score, within the IT Services and Support in London, United Kingdom cohort of 3 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.