Company lists · Data refreshed August 2026
Top 25 Cloud infrastructure developers based in the United Kingdom
RevenueBase identified 327 cloud infrastructure developers headquartered in the United Kingdom as of August 2026 and tracks 8,282 professional contacts across them, including 1,981 with verified work emails and 547 with mobile numbers. London is the largest hub.
This list covers cloud infrastructure developers 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 August 31, 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 cloud infrastructure developers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,039 contacts → | ||||
Partial evidence “OVHcloud is a global player and the leading European cloud provider operating over servers within 43 data centers across 4 continents to reach 1,6 million customers in over 140…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 784 contacts → | ||||
Indirect evidence “Bytes is a leading provider of world-class IT solutions.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 422 contacts → | ||||
Partial evidence “Iomart combines cutting-edge cloud technology with deep industry expertise to help organisations transform with confidence.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 421 contacts → | ||||
Partial evidence “At Colt Data Centre Services, we aspire to our customers’ success, ensuring your growth is supported by the best infrastructure solution for your business’ unique vision.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 250 contacts → | ||||
Partial evidence “BUI is an award-winning global technology consultancy delivering cloud, security, networking and managed services from offices in South Africa, East Africa, the United Kingdom…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 224 contacts → | ||||
Partial evidence “Proact is a leading IT expert helping customers secure business critical data via best in class hybrid cloud solutions.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 175 contacts → | ||||
Partial evidence “Creative ITC is a global cloud and managed services provider built for complex design, engineering, and business critical IT environments.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 168 contacts → | ||||
Partial evidence “Cloud Direct is a leading Microsoft Partner that helps organisations realise the true value of artificial intelligence and position themselves as Agent-Ready Enterprises.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 121 contacts → | ||||
Indirect evidence “Zure designs, builds, and manages digital solutions on Microsoft Azure.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 98 contacts → | ||||
Partial evidence “Adapt is a leading UK managed cloud services provider and integrator, enabling customers’ digital evolution.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 84 contacts → | ||||
Partial evidence “We design, architect and integrate hybrid-cloud solutions for big-data and fast-data requirements, partnering with a network of global technology providers and innovative…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 75 contacts → | ||||
Partial evidence “Civo is the Sovereign Cloud and AI platform that frees you to build without limits.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 67 contacts → | ||||
Indirect evidence “Cogeco Peer 1 has changed its name to Aptum Technologies.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 14 | 63 contacts → | ||||
Partial evidence “We design, develop and deliver business transformation through the power of the cloud Knowing how and where to invest in digital opportunities is vital to the growth of any…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 15 | 59 contacts → | ||||
Partial evidence “11:11 Systems is a managed infrastructure solutions provider that empowers customers to modernize, protect, and manage mission-critical applications and data, leveraging 11:11’s…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 16 | 58 contacts → | ||||
Partial evidence “Appvia helps organisations build, secure and innovate in the cloud.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 17 | 51 contacts → | ||||
Partial evidence “Ampito Group is a leading provider of technology solutions, cloud services, digital media and marketing.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 18 | 50 contacts → | ||||
Indirect evidence “At Q Associates we live and breathe information technology and we're passionate about the difference it can make to an organisation when you get it right.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 19 | 47 contacts → | ||||
Partial evidence “CloudZenia specializes in Managed DevOps, Cloud Engineering, Migration, Backup & DR, Managed Services, and Security Solutions.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 20 | 35 contacts → | ||||
Indirect evidence “Now trading under the brand ARO Technology.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 21 | 35 contacts → | ||||
Partial evidence “Excel builds, supports and optimises the IT infrastructure, networks and connectivity which drive global business performance.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 22 | 30 contacts → | ||||
Strong evidence “UKN Group is a leading provider of Managed Services and authority for the strategic transition to either a complete virtualised infrastructure or cloud based proposition.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 23 | 29 contacts → | ||||
Partial evidence “Nexstor - The UK's leading Hybrid Cloud Specialist.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Indirect evidence “ShapeBlue is the largest independent integrator of CloudStack technologies globally.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 25 | 27 contacts → | ||||
Indirect evidence “With over 30 years of experience, Form IT Solutions is committed to delivering high-quality IT services tailored to the unique needs of our clients.” Source: RevenueBase Database · checked Aug 31, 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: cloud infrastructure developers. 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 cloud infrastructure developers.
- Partial evidence
- Its own public description names part of cloud infrastructure developers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cloud infrastructure developers. 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 327 cloud infrastructure developers based in the United Kingdom
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Cloud infrastructure developers based in the United Kingdom at a glance
As of Aug 31, 2026Companies by employee count
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 cloud infrastructure developers, 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 “cloud infrastructure developers”. 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 cloud infrastructure developers), 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 cloud infrastructure developers, 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, 1,981 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 August 31, 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.
Cloud infrastructure developers 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 cloud infrastructure developers, 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 cloud infrastructure developers are there based in the United Kingdom?
RevenueBase identified 327 cloud infrastructure developers headquartered in the United Kingdom as of August 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?
Ovhcloud, headquartered in London, tops this list with the largest team on record.
Which city has the most cloud infrastructure developers?
London leads with 133 headquartered companies, followed by Manchester (12) and Basingstoke (6).
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 1,981 verified decision-maker contacts tracked across these 327 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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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