Company lists · Data refreshed August 2026

Top 25 Cloud infrastructure companies based in the United Kingdom

Name: Cloud infrastructure companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 269 companies tracked

RevenueBase identified 269 cloud infrastructure companies headquartered in the United Kingdom as of August 2026 and tracks 6,056 professional contacts across them, including 1,053 with verified work emails and 382 with mobile numbers. London is the largest hub.

This list covers cloud infrastructure 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 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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

269Companies

6,056Contacts tracked

1,053Verified emails

382Mobile numbers

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The 25 largest cloud infrastructure companies based in the United Kingdom

Ranked by team size

Top 25 of 269 cloud infrastructure companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to cloud infrastructure companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ovhcloud	Partial evidence	London, United Kingdom	1,001-5,000	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, 2026
2	Iomart	Partial evidence	Glasgow, United Kingdom	201-500	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, 2026
3	Colt Data Centre Services	Partial evidence	London, United Kingdom	201-500	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, 2026
4	Beeks Group	Partial evidence	Glasgow, United Kingdom	51-200	119 contacts →
	Partial evidence “Beeks is a leading force in financial technology infrastructure, specialising in Infrastructure as a Service (IaaS) for the high-frequency trading sector within capital markets…” Source: RevenueBase Database · checked Aug 31, 2026
5	NTT Ltd. Cloud	Indirect evidence	London, United Kingdom	201-500	112 contacts →
	Indirect evidence “Welcome to the home of NTT Ltd.” Source: RevenueBase Database · checked Aug 31, 2026
6	ORM	Indirect evidence	London, United Kingdom	51-200	82 contacts →
	Indirect evidence “ORM is now Paragon DCX.” Source: RevenueBase Database · checked Aug 31, 2026
7	Brightsolid	Partial evidence	Dundee, United Kingdom	51-200	77 contacts →
	Partial evidence “Brightsolid is expert in all things colocation, cloud and cyber security.” Source: RevenueBase Database · checked Aug 31, 2026
8	CIVO	Partial evidence	London, United Kingdom	51-200	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, 2026
9	Cogeco Peer 1	Indirect evidence	Southampton, United Kingdom	501-1,000	67 contacts →
	Indirect evidence “Cogeco Peer 1 has changed its name to Aptum Technologies.” Source: RevenueBase Database · checked Aug 31, 2026
10	Onyx Group	Partial evidence	Gateshead, United Kingdom	51-200	66 contacts →
	Partial evidence “We would like to share some exciting news – Onyx Group has been acquired by cloud, colocation and managed hosting expert Pulsant, expanding its network to 15 UK-based datacentres.” Source: RevenueBase Database · checked Aug 31, 2026
11	Iland 11 11 Systems	Partial evidence	Ascot, United Kingdom	1,001-5,000	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, 2026
12	IIJ Europe	Indirect evidence	London, United Kingdom	51-200	49 contacts →
	Indirect evidence “We were founded on a culture of engineering excellence and innovation, IIJ is The Backbone of IT for our clients.” Source: RevenueBase Database · checked Aug 31, 2026
13	Coreix	Indirect evidence	Welwyn Garden City, United Kingdom	11-50	32 contacts →
	Indirect evidence “Coreix is a managed hosting, colocation and network services provider which offers secure, agile, scalable and robust hosting solutions to clients in varying sectors including…” Source: RevenueBase Database · checked Aug 31, 2026
14	Cudo Ventures	Strong evidence	London, United Kingdom	51-200	30 contacts →
	Strong evidence “CUDO Ventures was founded and is headquartered in the UK, with over two decades of experience in cloud, data center, and enterprise infrastructure.” Source: RevenueBase Database · checked Aug 31, 2026
15	Skye Cloud LTD	Partial evidence	London London, United Kingdom	11-50	28 contacts →
	Partial evidence “Not your standard "one-size fits all" commoditised Cloud Service Provider, Skye Cloud are passionate about the flexibility and versatility Cloud Computing has to offer and have…” Source: RevenueBase Database · checked Aug 31, 2026
16	ERA LTD B Corp	Partial evidence	United Kingdom	11-50	26 contacts →
	Partial evidence “ERA is a leading independent provider of Infrastructure as a Service (IaaS) and managed workflow solutions for the media, post-production and broadcast industries.” Source: RevenueBase Database · checked Aug 31, 2026
17	Eukhost	Strong evidence	Leeds, United Kingdom	51-200	23 contacts →
	Strong evidence “Whether you're launching a personal website or need powerful cloud infrastructure for your business, our cutting-edge technology and expert support ensure reliable and secure…” Source: RevenueBase Database · checked Aug 31, 2026
18	Edge Network	Strong evidence	London, United Kingdom	11-50	23 contacts →
	Strong evidence “A distributed cloud platform that runs closer to users – delivering reliable performance, transparent infrastructure, and cost efficiency for modern media and enterprise workloads.” Source: RevenueBase Database · checked Aug 31, 2026
19	HDUK	Partial evidence	Carnforth, United Kingdom	11-50	22 contacts →
	Partial evidence “Hosted Desktop UK Limited provides cloud computing services to small and medium sized businesses across the UK.” Source: RevenueBase Database · checked Aug 31, 2026
20	Saints & Masters	Strong evidence	Peterborough, United Kingdom	201-500	19 contacts →
	Strong evidence “Saints and Masters is a next-generation cloud infrastructure company built to serve regulated industries with secure, scalable, and compliant solutions.” Source: RevenueBase Database · checked Aug 31, 2026
21	QWARE	Partial evidence	Winchester, United Kingdom	11-50	18 contacts →
	Partial evidence “QWARE is an award-winning Cloud Solutions and Services provider, with a passion for delivering high-quality cloud-first solutions to businesses worldwide.” Source: RevenueBase Database · checked Aug 31, 2026
22	ELITE	Partial evidence	Portsmouth, United Kingdom	11-50	16 contacts →
	Partial evidence “We focus on the quality of our service, infrastructure, and most importantly, the support of our customers.” Source: RevenueBase Database · checked Aug 31, 2026
23	TIBUS	Indirect evidence	London, United Kingdom	11-50	15 contacts →
	Indirect evidence “Working with Tibus gives you much more than just a hosting platform.” Source: RevenueBase Database · checked Aug 31, 2026
24	AIMES	Partial evidence	Liverpool, United Kingdom	51-200	14 contacts →
	Partial evidence “Part of the Arrow Group, AIMES is an award-winning technology company that provides data centre and cloud computing services to businesses across a range of industries, including…” Source: RevenueBase Database · checked Aug 31, 2026
25	Xglobe	Indirect evidence	London, United Kingdom	11-50	13 contacts →
	Indirect evidence “XGlobe founded in 2002, with the purpose to offer companies the opportunity to purchase advanced hosting services from data Facilities worldwide, and benefit from the top-notch…” Source: RevenueBase Database · checked Aug 31, 2026

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 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 cloud infrastructure companies.
Partial evidence: Its own public description names part of cloud infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud infrastructure 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 269 cloud infrastructure companies based in the United Kingdom

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Cloud infrastructure companies based in the United Kingdom at a glance

As of Aug 31, 2026

17.4%Verified-email coverage

6.3%Mobile-number coverage

22.5Average contacts per company

11-50Median size (employees)

37.5%Largest-city concentration · London

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

118

11-50

107

51-200

201-500

501-1,000

1,001-5,000

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 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 “cloud infrastructure 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 cloud infrastructure 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 cloud infrastructure 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, 1,053 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 companies by metro

Cloud infrastructure companies in London101

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 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 cloud infrastructure companies are there based in the United Kingdom?

RevenueBase identified 269 cloud infrastructure companies 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 companies?

London leads with 101 headquartered companies, followed by Glasgow (7) and Manchester (7).

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 1,053 verified decision-maker contacts tracked across these 269 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.