Company lists · Data refreshed September 2026

Top 25 SaaS cloud infrastructure developers based in London, United Kingdom

Name: SaaS cloud infrastructure developers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 99 companies tracked

RevenueBase identified 99 SaaS cloud infrastructure developers headquartered in London, United Kingdom as of September 2026 and tracks 632 professional contacts across them, including 184 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers SaaS cloud infrastructure developers headquartered in London, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

99Companies

632Contacts tracked

184Verified emails

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The 25 largest SaaS cloud infrastructure developers based in London, United Kingdom

Ranked by team size

Top 25 of 99 SaaS cloud infrastructure developers based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to SaaS cloud infrastructure developers: 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	Appvia	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	60 contacts →
	Partial evidence “Appvia helps organisations build, secure and innovate in the cloud.” Source: RevenueBase Database · checked Sep 29, 2026
2	ONAPP	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	31 contacts →
	Partial evidence “OnApp makes cloud fast, easy & profitable for Telcos, MSPs & other cloud service providers.” Source: RevenueBase Database · checked Sep 29, 2026
3	Cloudnesil	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “Founded at 2013, cloudnesil takes a highly technical and innovative approach to development, ranging from utilising the latest toolsets to developing bespoke solutions for…” Source: RevenueBase Database · checked Sep 29, 2026
4	Itouchvision	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “iTouchVision is one of the world's leading cloud-based service providers with innovation & excellence at its base.” Source: RevenueBase Database · checked Sep 29, 2026
5	3verest	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	18 contacts →
	Strong evidence “3verest is a world class cloud computing business, delivering cloud infrastructure, applications and services.” Source: RevenueBase Database · checked Sep 29, 2026
6	Bigstep	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	17 contacts →
	Strong 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, 2026
7	Graphene	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	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, 2026
8	Bridgeapps LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	16 contacts →
	Partial evidence “We are tech savvy bunch of people who love to work with Cloud, Infra and Code to create meaningful solutions which solves real business problems.” Source: RevenueBase Database · checked Sep 29, 2026
9	digitalis.io	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	12 contacts →
	Strong evidence “Data, DevOps and Cloud Experts: Future-Proof Your Infrastructure At digitalis.io, we design and manage portable, secure systems that thrive across any environment-public clouds…” Source: RevenueBase Database · checked Sep 29, 2026
10	Vizrex Software Solutions	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “Vizrex Software Solutions builds custom software for startups, growing businesses, and complex operations.” Source: RevenueBase Database · checked Sep 29, 2026
11	Blackbox Hosting LTD	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	9 contacts →
	Strong evidence “Private Cloud Infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026
12	Labixe LTD	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	8 contacts →
	Strong evidence “Labixe Host offers a simple, reliable and easy-to-use cloud hosting solution that enables developers and businesses to quickly set up and run their websites or applications.” Source: RevenueBase Database · checked Sep 29, 2026
13	Magicorn	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	6 contacts →
	Partial evidence “We're not just another IT company-we're pioneers in Cloud, DevOps and Technology.” Source: RevenueBase Database · checked Sep 29, 2026
14	Sysdojo	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	6 contacts →
	Partial evidence “As a fast-growing technology services company, we specialise in developing, maintaining modern applications, as well as building, operating and maintaining your cloud…” Source: RevenueBase Database · checked Sep 29, 2026
15	Cloud 66	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	5 contacts →
	Strong evidence “Cloud 66 is an end to end infrastructure management service.” Source: RevenueBase Database · checked Sep 29, 2026
16	Infinite	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Technology.” Source: RevenueBase Database · checked Sep 29, 2026
17	Rosettahub	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Strong evidence “The RosettaHub supercloud and SaaS platform exposes a single layer of cloud-spanning technology for security, finops, governance, operations, observability, collaboration and…” Source: RevenueBase Database · checked Sep 29, 2026
18	Mped LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “Empowering Businesses with Scalable & Secure Software Solutions At MPED LTD, we specialize in custom software development, cloud solutions, and digital transformation for…” Source: RevenueBase Database · checked Sep 29, 2026
19	Tech Amigos	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “We accelerate cloud adoption for growing businesses using our product, called Diego.” Source: RevenueBase Database · checked Sep 29, 2026
20	Hyperneph	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	2 contacts →
	Partial evidence “Scalability and security for your Cloud Enabled Business.” Source: RevenueBase Database · checked Sep 29, 2026
21	Venus Cloud LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Our experience leads your business to success We have specialised in internet security and scalable cloud architecture since 2011.” Source: RevenueBase Database · checked Sep 29, 2026
22	Reithan	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Experienced Technical IT specialist with a demonstrated history of working in top tier companies across various industries.” Source: RevenueBase Database · checked Sep 29, 2026
23	ZEYIX	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Devops, Platform, and Cloud technology services” Source: RevenueBase Database · checked Sep 29, 2026
24	Fiberax Networking & Cloud	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	1 contacts →
	Partial evidence “Fiberax, the managed hybrid cloud company, helps businesses tap the power of cloud computing without the complexity and cost of managing it on their own.” Source: RevenueBase Database · checked Sep 29, 2026
25	Cloud In The Channel	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	1 contacts →
	Partial evidence “Cloud Services Management Platform and marketpalce” Source: RevenueBase Database · checked Sep 29, 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: SaaS 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 SaaS cloud infrastructure developers.
Partial evidence: Its own public description names part of SaaS 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 SaaS 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 99 SaaS cloud infrastructure developers based in London, United Kingdom

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SaaS cloud infrastructure developers based in London, United Kingdom at a glance

As of Sep 29, 2026

29.1%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 99 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 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 London, United Kingdom whose own description of what they do matches “SaaS 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 SaaS 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 SaaS cloud infrastructure developers, and records with no verified work email. Companies headquartered outside London 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, 184 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.

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 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 SaaS cloud infrastructure developers are there based in London, United Kingdom?

RevenueBase identified 99 SaaS cloud infrastructure developers headquartered in London, 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?

Appvia, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most SaaS cloud infrastructure developers?

London leads the United Kingdom with 99 headquartered companies, followed by Bristol (4) and Manchester (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 184 verified decision-maker contacts tracked across these 99 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.