Company lists · Data refreshed September 2026

Top 17 Open source cloud infrastructure companies based in the United Kingdom

RevenueBase identified 40 company matches for open source cloud infrastructure companies associated with the United Kingdom as of September 2026 and tracks 262 professional contacts across them, including 114 with verified work emails and 27 with mobile numbers. London is the largest hub.

This list covers company matches for open source cloud infrastructure 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 September 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 Sep 5, 2026 How this list was built
40Companies
262Contacts tracked
114Verified emails
27Mobile numbers
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The 17 largest open source cloud infrastructure companies based in the United Kingdom

Ranked by team size
Top 17 of 40 company matches for open source cloud infrastructure companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 5, 202651-20075 contacts →

Exact match

“Civo is the Sovereign Cloud and AI platform that frees you to build without limits.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 5, 202611-5029 contacts →

Exact match

“ShapeBlue is the largest independent integrator of CloudStack technologies globally.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3Exact matchBristol, United KingdomHQ recorded Sep 5, 202611-5027 contacts →

Exact match

“StackHPC is one of the leading OpenStack consultancies working with research institutions worldwide.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 5, 202611-5020 contacts →

Exact match

“Arjuna Technologies Limited is a world leading innovator in distributed computing and has an international reputation for delivering mission-critical products to global software…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
5Exact matchLowry Mill, United KingdomHQ recorded Sep 5, 20261-1017 contacts →

Exact match

“Open, Affordable, Predictable.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 5, 202651-20014 contacts →

Exact match

“Keep IT Simple (KITS), a TPXimpact company, delivers secure, inclusive and outcome-focused digital transformation services for Government and public sector organisations.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 5, 20261-109 contacts →

Exact match

“Private Cloud Infrastructure.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8Exact matchEngland, United KingdomHQ recorded Sep 5, 20261-105 contacts →

Exact match

“At Scaleblade we are developing a suite of cloud compute tools to help keep you (and your business) online.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchNottingham, United KingdomHQ recorded Sep 5, 202611-502 contacts →

Exact match

“Flexiscale offers innovative cloud solutions to increase revenues and profits by arming our customers and partners with the resources to turn ideas into profitable services…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchFinchley, United KingdomHQ recorded Sep 5, 202651-2001 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Cloud Infrastructure Automation.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Equahost provides enterprise class hosting and managed services built on the public cloud.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Blackbox Thinking specialises in open source technologies and works with our clients to deliver cost effective solutions.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact matchPeterborough, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“OpenFaaS Ltd is a Software company focused on Cloud Native technology, open source innovation and developer-experience.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15Exact matchBarrow-upon-humber, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“We specialise in Cloud & Automation technologies.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16Exact matchReading, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“TECNICK.COM LTD is an Open Source Software development company.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17Exact matchBromley, United KingdomHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Provides bespoke solutions to cloud infrastructure.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

Showing 17 of 40 open source cloud infrastructure companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 114 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source cloud infrastructure companies based in the United Kingdom at a glance

As of Sep 5, 2026
43.5%Verified-email coverage
10.3%Mobile-number coverage
6.5Average contacts per company
1-10Median size (employees)
55.0%Largest-city concentration · London
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
10
51-200
7
201-500
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 “open source cloud infrastructure 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 114 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 September 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.

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 “open source cloud infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open source cloud infrastructure companies are there based in the United Kingdom?

RevenueBase identified 40 company matches for open source cloud infrastructure companies associated with the United Kingdom as of September 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?

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

Which city has the most open source cloud infrastructure companies?

London leads with 22 company records, followed by Ashford (1) and Barrow-Upon-Humber (1).

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 114 professional contacts with verified work emails tracked across these 40 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 September 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.