Company lists · Data refreshed September 2026

Top 24 Cloud based software companies based in London, United Kingdom

Name: Cloud based software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 8, 2026 78 companies tracked

RevenueBase identified 78 cloud based software companies headquartered in London, United Kingdom as of September 2026 and tracks 803 professional contacts across them, including 137 with verified work emails and 19 with mobile numbers. London is the largest hub.

This list covers cloud based software companies 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 8, 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 8, 2026 86% judged on-target in blind review

78Companies

803Contacts tracked

137Verified emails

19Mobile numbers

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The 24 largest cloud based software companies based in London, United Kingdom

Ranked by team size

Top 24 of 78 cloud based software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to cloud based software 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	Optimiser	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	57 contacts →
	Indirect evidence “Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Source: RevenueBase Database · checked Sep 8, 2026
2	Warrgyizmorsch	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	51 contacts →
	Indirect evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 8, 2026
3	Ascendx	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	22 contacts →
	Strong evidence “An enterprise cloud software company that helps teams solve their problems by boosting productivity and transforming tech stacks on CRM platforms such as Salesforce, Dynamics 365…” Source: RevenueBase Database · checked Sep 8, 2026
4	Itouchvision	Partial evidence	London, United KingdomHQ checked Sep 8, 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 8, 2026
5	Robosme	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	15 contacts →
	Partial evidence “Robosme - CRM to Win Easy to use cloud CRM that automates your business and benefits every process you touch the customer.” Source: RevenueBase Database · checked Sep 8, 2026
6	Nublado	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	10 contacts →
	Partial evidence “We have been through a long journey of advising and designing very complex and integrated Microsoft cloud solutions in multiple different industries like public sector and…” Source: RevenueBase Database · checked Sep 8, 2026
7	Smarty Software	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	9 contacts →
	Strong evidence “Smarty Software is a SaaS company based in the City of London, which mainly provides cloud accounting and cloud CRM solution services.” Source: RevenueBase Database · checked Sep 8, 2026
8	Octasys	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	9 contacts →
	Partial evidence “Octasys is a dynamic software company that specializes in creating innovative products to meet the ever-changing needs of businesses and consumers.” Source: RevenueBase Database · checked Sep 8, 2026
9	Customeros	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	8 contacts →
	Indirect evidence “A proactive CRM designed for modern SaaS.” Source: RevenueBase Database · checked Sep 8, 2026
10	Codescrum	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	7 contacts →
	Partial evidence “Codescrum makes the unthinkable possible by understanding business problems, envisioning how software solves them and delivering the right result.” Source: RevenueBase Database · checked Sep 8, 2026
11	Entranet Cloud Platform	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	7 contacts →
	Partial evidence “Entranet, is a pioneering Cloud ERP Solution dedicated to delivering business applications over the internet.” Source: RevenueBase Database · checked Sep 8, 2026
12	Square House Technologies	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	6 contacts →
	Partial evidence “Software Solutions Through building and supporting other businesses, our company has grown from its small beginnings to becoming a trusted and renowned field leader in…” Source: RevenueBase Database · checked Sep 8, 2026
13	Online50 Limited	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	5 contacts →
	Partial evidence “At the start of the century Online50 invented the idea of clients and accountants being able to work on their financial software at the same time using the Internet - before we…” Source: RevenueBase Database · checked Sep 8, 2026
14	Cloud 9 Assist LTD	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	4 contacts →
	Partial evidence “Cloud 9 Assist Ltd develop a wide range of hosted online applications for businesses encompassing areas such as CRM, Order Processing, Project Management, Helpdesk, Expense Forms…” Source: RevenueBase Database · checked Sep 8, 2026
15	Shoonyata	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	4 contacts →
	Partial evidence “Shoonyata's mission is to make power of innovation and software affordable to all.” Source: RevenueBase Database · checked Sep 8, 2026
16	TWO Brothers Cloud Solutions	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	4 contacts →
	Partial evidence “We started Two Brothers because moving to cloud is the best decision your business can make; it will be the single most significant technology shift your business will face over…” Source: RevenueBase Database · checked Sep 8, 2026
17	Bluespidy	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	3 contacts →
	Indirect evidence “BlueSpidy Social Office is a single sign-on web-based application delivering tools for SMEs to manage customers, sales and suppliers, people, products and projects, documents…” Source: RevenueBase Database · checked Sep 8, 2026
18	Skynet Applied Systems LTD	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	3 contacts →
	Indirect evidence “Control your business from anywhere.” Source: RevenueBase Database · checked Sep 8, 2026
19	ABCUM	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	2 contacts →
	Partial evidence “Abcum is a tech company which focuses on the development of software-as-a-service applications for businesses - catering for enterprises, member organisations, associations, and…” Source: RevenueBase Database · checked Sep 8, 2026
20	TCM Information Analytics	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	11-50	2 contacts →
	Indirect evidence “At TCM information analytics (TCM) we believe that every company is different and contains a unique blend of information, processes and skills to manage their operations.” Source: RevenueBase Database · checked Sep 8, 2026
21	Chirambattu Limited	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	1 contacts →
	Indirect evidence “Chirambattu is motivated by the belief that great experiences build great businesses.” Source: RevenueBase Database · checked Sep 8, 2026
22	Seven IT Services	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	1 contacts →
	Partial evidence “We redefine the way that small businesses utilize IT & Cloud technologies.” Source: RevenueBase Database · checked Sep 8, 2026
23	Expino Limited	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	1 contacts →
	Partial evidence “Expino Limited is a company founded in 2017 which focuses on cloud based products mainly in SaaS model.” Source: RevenueBase Database · checked Sep 8, 2026
24	Prospr	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1-10	1 contacts →
	Partial evidence “Prospr is a marketplace for business software and services.” Source: RevenueBase Database · checked Sep 8, 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 based software 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 based software companies.
Partial evidence: Its own public description names part of cloud based software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud based software 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 24 of 78 cloud based software companies based in London, United Kingdom

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Cloud based software companies based in London, United Kingdom at a glance

As of Sep 8, 2026

17.1%Verified-email coverage

2.4%Mobile-number coverage

10.3Average contacts per company

1-10Median size (employees)

144.9%Largest-city concentration · London

Sep 8, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1270–30

931–60

161–90

090–180

0180+

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 based software 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 London, United Kingdom whose own description of what they do matches “cloud based software 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 based software 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 based software companies, 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, 137 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 8, 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 based software companies by metro in the United Kingdom

Cloud based software companies in London113

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 based software 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 based software companies are there based in London, United Kingdom?

RevenueBase identified 78 cloud based software companies 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?

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

Which city has the most cloud based software companies?

London leads with 113 headquartered companies, followed by Manchester (8) and Bristol (8).

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 137 verified decision-maker contacts tracked across these 78 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 8, 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.