Company lists · Data refreshed September 2026
Top 25 SaaS infrastructure companies based in the United Kingdom
RevenueBase identified 144 SaaS infrastructure companies headquartered in the United Kingdom as of September 2026 and tracks 3,522 professional contacts across them, including 1,531 with verified work emails. London is the largest hub.
This list covers SaaS 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 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 SaaS infrastructure companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,842 contacts → | ||||
Indirect evidence “NTT Global Data Centers is a division of NTT DATA.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 414 contacts → | ||||
Indirect evidence “Iomart combines cutting-edge cloud technology with deep industry expertise to help organisations transform with confidence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 77 contacts → | ||||
Indirect evidence “We are a fully-managed global hosting provider offering industry-leading technology with a customer-centric approach.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 66 contacts → | ||||
Indirect 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 Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 35 contacts → | ||||
Indirect evidence “Secure, compliant and resilient Cloud IT for legal, accounting, financial and professional service companies IT Farm helps you focus on the sustainability and long term growth of…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 33 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 Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 contacts → | ||||
Indirect 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 Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 28 contacts → | ||||
Indirect evidence “Eloquent operates a range of platforms across various secure data centres in the UK, all of which are connected to our network and serve as the delivery point for our services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 27 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 Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “Connecting You to the Services that Power Your Business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 22 contacts → | ||||
Indirect evidence “Hosted Desktop UK Limited provides cloud computing services to small and medium sized businesses across the UK.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 21 contacts → | ||||
Indirect evidence “Experts in cloud computing, connectivity and proactive support.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 21 contacts → | ||||
Strong evidence “Kinde is a fully-integrated developer platform, providing SaaS and AI app infrastructure to thousands of businesses globally.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 18 contacts → | ||||
Partial evidence “3verest is a world class cloud computing business, delivering cloud infrastructure, applications and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Partial evidence “Metal Cloud Infrastructure as a Service (IaaS) provider offering single tenant, on-demand environments built for high traffic websites, micro-services architectures, IoT & mobile…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 16 contacts → | ||||
Indirect evidence “VMhosts is an IT services company with friendly, professional and flexible customer service offering competitive and transparent pricing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Partial evidence “Graphene is an Infrastructure-as-a-Service provider, dedicated to empowering wealth managers with the technology and support they need to own and operate data-driven wealth…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 16 contacts → | ||||
Partial evidence “Liquify is an Infrastructure as a Service (IaaS) company focused on institutions, projects, and investment firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 16 contacts → | ||||
Partial evidence “MDS Technologies provides assured (secure, confidential, high resilience) co-location and Infrastructure-as-a-Service (IaaS) operations that enable UK Public Sector organisations…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 16 contacts → | ||||
Indirect evidence “At LifeinCloud, we believe IT should serve your business, not the other way around.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 15 contacts → | ||||
Indirect evidence “We are a cloud analytics company with over locations in the UK, US, Canada, Australia and New Zealand using our solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Indirect evidence “Welcome to our company page!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 11 contacts → | ||||
Partial evidence “Established in 1996, Foundation IT works with forward-thinking organisations that are looking to maximise the benefits from their IT infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Indirect evidence “In a technology world where new technologies come and go, we've been building trusted client partnerships for 24 years.” 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: SaaS 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 SaaS infrastructure companies.
- Partial evidence
- Its own public description names part of SaaS infrastructure companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name SaaS 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 144 SaaS infrastructure companies based in the United Kingdom
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SaaS infrastructure 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 144 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 SaaS 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 “SaaS 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 SaaS 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 SaaS 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, 1,531 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.
SaaS infrastructure 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 SaaS 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 SaaS infrastructure companies are there based in the United Kingdom?
RevenueBase identified 144 SaaS infrastructure 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?
NTT Global Data Centers, headquartered in London, tops this list with the largest team on record.
Which city has the most SaaS infrastructure companies?
London leads with 57 headquartered companies, followed by Manchester (7) and Glasgow (4).
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 1,531 verified decision-maker contacts tracked across these 144 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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