Company lists · Data refreshed September 2026
Top 25 Software support outsourcing companies based in the United Kingdom
RevenueBase identified 716 software support outsourcing companies headquartered in the United Kingdom as of September 2026 and tracks 10,469 professional contacts across them, including 3,707 with verified work emails. London is the largest hub.
This list covers software support outsourcing companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest software support outsourcing companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,242 contacts → | ||||
Partial evidence “Founded in 2008 OneAdvanced has grown into one of the UK’s largest providers of business software and services serving global customers with an annual turnover of £330M+.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,039 contacts → | ||||
Indirect evidence “Global business doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 616 contacts → | ||||
Partial evidence “Excis is a trusted global IT services company, delivering agile, multilingual support across 150+ countries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 510 contacts → | ||||
Partial evidence “ESP provides IT support services across the globe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 327 contacts → | ||||
Strong evidence “Damco Solutions Limited is a specialist software solutions and services & a business process outsourcing services company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 256 contacts → | ||||
Partial evidence “Solid Systems Global is a worldwide provider of multi-vendor enterprise equipment services that cover the complete lifecycle of install base technology support.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 241 contacts → | ||||
Indirect evidence “At Sharp Brains, we are your premier IT Services & Solutions Provider based in the UK, dedicated to meeting your business's unique needs with tailor-made solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 229 contacts → | ||||
Partial evidence “Vista is the UK market leader in delivering IT technology deployment and support services in retail, hospitality, healthcare and entertainment sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 129 contacts → | ||||
Indirect evidence “Founded in 2007, we are independent, knowledgeable and reliable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 92 contacts → | ||||
Partial evidence “The costs for shifting to the cloud and juggling a hybrid environment continue to escalate due to rising support fees and expensive tech resources.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 76 contacts → | ||||
Indirect evidence “CST is an I.T.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 69 contacts → | ||||
Partial evidence “Agile Cyber Solutions is a company providing software services which prides itself as an understanding IT partner for various product development companies, large portals…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 67 contacts → | ||||
Strong evidence “Support Revolution provides 3rd party Oracle and SAP Software Support & Maintenance and help to save customers up to 90% on what they currently pay.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 63 contacts → | ||||
Partial evidence “Field Techs Services LTD is a best one IT support providing company in EMEA, APAC and LATUM.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 52 contacts → | ||||
Partial evidence “Support Warehouse is one of the world’s largest re-sellers of vendors’ technical IT support services with around customers across twelve different countries and over 20 years’…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 47 contacts → | ||||
Partial evidence “Qcom provides technical services and aftermarket support to some of the world’s leading technology brands.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 45 contacts → | ||||
Partial evidence “At SKO Systems, we engineer enterprise-grade software ecosystems designed for the unique, high-stakes realities of the maritime environment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 42 contacts → | ||||
Partial evidence “Software Development Company that encourages thinking beyond limits, turning our customers' ideas into reality.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 39 contacts → | ||||
Strong evidence “We are a software development outsourcing company with 9+ years in business and 200+ successful projects.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 38 contacts → | ||||
Partial evidence “Convene IT Ltd With over 15 years of experience in IT support services We we offer high quality business IT service, combining expertise and great customer service but without the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 38 contacts → | ||||
Partial evidence “We are focused on providing on-demand and well-managed IT support services around the globe and around the clock.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 37 contacts → | ||||
Partial evidence “PC Consultants - Isle of Wight based IT Consultancy and Technology Company - IT Sales Support & Service - Support Contracts and Repair Workshop - Microsoft Partner and Small…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 36 contacts → | ||||
Indirect evidence “https://linktr.ee/totalit Total IT is an award-winning technology services company based in Bedfordshire.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 36 contacts → | ||||
Indirect evidence “With 30 years' experience we offer a wide array of solutions and services to meet your business objectives and expectations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 35 contacts → | ||||
Partial evidence “Acronyms is an IT support company offering a range of IT services, designed to save organisations time that they can spend on growing their own businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: software support outsourcing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names software support outsourcing companies.
- Partial evidence
- Its own public description names part of software support outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name software support outsourcing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 716 software support outsourcing companies based in the United Kingdom
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Software support outsourcing companies based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 716 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among software support outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “software support outsourcing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names software support outsourcing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among software support outsourcing companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 3,707 across the full list. 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 September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Software support outsourcing companies by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names software support outsourcing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many software support outsourcing companies are there based in the United Kingdom?
RevenueBase identified 716 software support outsourcing companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Oneadvanced, headquartered in Birmingham, tops this list with the largest team on record.
Which city has the most software support outsourcing companies?
London leads with 215 headquartered companies, followed by Bristol (13) and Leeds (13).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,707 verified decision-maker contacts tracked across these 716 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 Smart Search, 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.
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