Company lists · Data refreshed November 2026

Top 25 System administration outsourcing companies based in the United Kingdom

Name: System administration outsourcing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 189 companies tracked

RevenueBase identified 189 company matches for system administration outsourcing companies associated with the United Kingdom as of November 2026 and tracks 912 professional contacts across them, including 346 with verified work emails. London is the largest hub.

This list covers company matches for system administration outsourcing companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

189Companies

912Contacts tracked

346Verified emails

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The 25 largest system administration outsourcing companies based in the United Kingdom

Ranked by team size

Top 25 of 189 company matches for system administration outsourcing companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	CMI	Exact match	Belfast, United KingdomHQ recorded Nov 5, 2026	51-200	70 contacts →
	Exact match “We create, design, deliver and support informed & intelligent strategies to navigate shifting technology, keeping organisations like yours effective & secure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Cheeky Munkey LTD	Exact match	St. Albans, United KingdomHQ recorded Nov 5, 2026	11-50	34 contacts →
	Exact match “Cheeky Munkey is a privately owned and managed IT support company based in St Albans, Hertfordshire, providing professional IT support within London and the South East.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Brilliant Computers Citadel And Information Technology	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	29 contacts →
	Exact match “We managed IT Infrastructures with dedicated Team of vibrant young Professionals.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Go-To Outsourcing	Exact match	Bromsgrove, United KingdomHQ recorded Nov 5, 2026	11-50	27 contacts →
	Exact match “Almost every business can save time and money with smart outsourcing from Go-To - how much depends on you.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Rabb-It	Exact match	Leeds, United KingdomHQ recorded Nov 5, 2026	11-50	26 contacts →
	Exact match “Rabb-IT is a team of IT outsourcing experts based in Leeds, West Yorkshire.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Serveradminz	Exact match	Camberley, United KingdomHQ recorded Nov 5, 2026	51-200	26 contacts →
	Exact match “A Premium Server Management Company with a decade of experience in Outsourced Web Hosting Support 24/7 Technical Support White Label Support Cloud Support and Management Remote…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	CUTEC	Exact match	Plymouth, United KingdomHQ recorded Nov 5, 2026	11-50	20 contacts →
	Exact match “At Cutec, we make IT simple for SMEs.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Network Integrators LTD	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	18 contacts →
	Exact match “Network Integrators, We are well-versed in a variety of operating systems, networks, and databases.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Pcexpress	Exact match	Edgware, United KingdomHQ recorded Nov 5, 2026	11-50	18 contacts →
	Exact match “Below is an overview of what PC Express are about.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Priority ONE IT	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	17 contacts →
	Exact match “Who we are, what we do Priority One IT is a specialist IT provider to SMEs in London, we understand the importance of reliable IT systems for our clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	CJ Systems Limited	Exact match	Wellington, United KingdomHQ recorded Nov 5, 2026	1-10	16 contacts →
	Exact match “CJ Systems provide high quality, flexible outsourced IT support for SMEs throughout the South West.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Innovec LTD	Exact match	Dundonald, United KingdomHQ recorded Nov 5, 2026	11-50	15 contacts →
	Exact match “Innovec is an IT support company proudly founded in 2009 with offices in Ayrshire and Glasgow.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Blucando	Exact match	Farnborough, United KingdomHQ recorded Nov 5, 2026	11-50	11 contacts →
	Exact match “Based in the South East, Blucando offer a variety of services across the UK to a growing number of small & medium businesses who trust us as their honest & open IT Partner.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Roundworks IT	Exact match	Nottingham, United KingdomHQ recorded Nov 5, 2026	11-50	11 contacts →
	Exact match “At RoundWorks IT, we redefine Managed Services to propel your business forward.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Mysonpages	Exact match	Rochdale, United KingdomHQ recorded Nov 5, 2026	11-50	11 contacts →
	Exact match “Myson Pages install, manage and monitor computer systems.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	IT For Starters	Exact match	Swavesey, United KingdomHQ recorded Nov 5, 2026	11-50	11 contacts →
	Exact match “With over 25 years’ experience of working with small and medium sized companies in the Cambridge area, IT For Starters specialise in the following areas of expertise: System…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Computer2cloud	Exact match	Eastbourne, United KingdomHQ recorded Nov 5, 2026	11-50	9 contacts →
	Exact match “At computer2cloud, we do things differently by combining technology with genuine partnership to deliver IT that truly supports your business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Telanova	Exact match	Bracknell, United KingdomHQ recorded Nov 5, 2026	11-50	9 contacts →
	Exact match “Managed IT - so you don’t have to.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Pinfields IT Limited	Exact match	Kidderminster, United KingdomHQ recorded Nov 5, 2026	1-10	9 contacts →
	Exact match “What do we do?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Techresponse	Exact match	Reading, United KingdomHQ recorded Nov 5, 2026	1-10	9 contacts →
	Exact match “TechResponse provide full-service IT outsourcing solutions to small and medium sized businesses, schools and other organisations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Sebs IT	Exact match	Haywards Heath, United KingdomHQ recorded Nov 5, 2026	11-50	8 contacts →
	Exact match “SEBS has been at the forefront of revolutionary technological advancements for over 40 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Computer Systems Engineers LTD	Exact match	Burgess Hill, United KingdomHQ recorded Nov 5, 2026	11-50	8 contacts →
	Exact match “Complete Business IT Support IT help and expert service with a personal touch.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Parkway Computer Services	Exact match	Leicester, United KingdomHQ recorded Nov 5, 2026	1-10	7 contacts →
	Exact match “Parkway Computer Services!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Information Solutions LTD	Exact match	Shrewsbury, United KingdomHQ recorded Nov 5, 2026	11-50	7 contacts →
	Exact match “Think of us as your IT department at a fraction of the cost.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Liquid Computing Limited	Exact match	Molash, United KingdomHQ recorded Nov 5, 2026	1-10	7 contacts →
	Exact match “Liquid Computing are an IT Support and Services company based in the Heart of Kent supporting customers throughout the South East of England and London.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “system administration outsourcing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 189 system administration outsourcing companies based in the United Kingdom

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System administration outsourcing companies based in the United Kingdom at a glance

As of Nov 5, 2026

37.9%Verified-email coverage

4.8Average contacts per company

1-10Median size (employees)

22.2%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

133

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 189 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “system administration outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 346 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

System administration outsourcing companies by metro

System administration outsourcing companies in London42

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “system administration outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many system administration outsourcing companies are there based in the United Kingdom?

RevenueBase identified 189 company matches for system administration outsourcing companies associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CMI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most system administration outsourcing companies?

London leads with 42 company records, followed by Bristol (3) and Glasgow (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 346 professional contacts with verified work emails tracked across these 189 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.