Company lists · Data refreshed September 2026

Top 25 SaaS software development companies based in London, United Kingdom

Name: SaaS software development 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 13, 2026 120 companies tracked

RevenueBase identified 120 SaaS software development companies headquartered in London, United Kingdom as of September 2026 and tracks 1,143 professional contacts across them, including 162 with verified work emails and 34 with mobile numbers. London is the largest hub.

This list covers SaaS software development 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 13, 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 13, 2026 86% judged on-target in blind review

120Companies

1,143Contacts tracked

162Verified emails

34Mobile numbers

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The 25 largest SaaS software development companies based in London, United Kingdom

Ranked by team size

Top 25 of 120 SaaS software development companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to SaaS software development 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	scrums.com	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	163 contacts →
	Partial evidence “Scrums.com is the Software Engineering Orchestration Platform (SEOP).” Source: RevenueBase Database · checked Sep 13, 2026
2	Opinov8	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	154 contacts →
	Indirect evidence “Winner of the Best AI Company Award by The Netty Awards · Headquartered in London, powered by a worldwide team of engineers across Europe, Egypt, and the Americas.” Source: RevenueBase Database · checked Sep 13, 2026
3	Warrgyizmorsch	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	51 contacts →
	Partial evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 13, 2026
4	1st 4 Connect Limited	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Strong evidence “1ST 4 Connect Limited’s core area of business is SAAS (software as a service also knows as software on demand).” Source: RevenueBase Database · checked Sep 13, 2026
5	Stallions Technologies	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	35 contacts →
	Indirect evidence “At Stallions Technologies, we passionately believe that we are successful in delivering excellence to our clients because we deliberately seek to hire 'Brilliant' people.” Source: RevenueBase Database · checked Sep 13, 2026
6	Softelegance	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	30 contacts →
	Strong evidence “Founded in 1993, SoftElegance is a custom software development company that has been providing reliable services for implementation of SaaS systems, sophisticated business…” Source: RevenueBase Database · checked Sep 13, 2026
7	Zentix	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	30 contacts →
	Strong evidence “ZentixSoft is a UK-based software development company helping businesses grow faster with AI, automation, and custom software.” Source: RevenueBase Database · checked Sep 13, 2026
8	Cloudnesil	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	29 contacts →
	Partial 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 13, 2026
9	Itouchvision	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	22 contacts →
	Indirect evidence “iTouchVision is one of the world's leading cloud-based service providers with innovation & excellence at its base.” Source: RevenueBase Database · checked Sep 13, 2026
10	Softexpoit	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Partial evidence “Softexpoit's team of experts combines technical expertise and creativity to develop custom software, mobile app, and web app solutions that meet your specific business/official…” Source: RevenueBase Database · checked Sep 13, 2026
11	Atomate Software	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Strong evidence “Founded in 2011, Atomate is a software development company focused on bespoke development and business solutions.” Source: RevenueBase Database · checked Sep 13, 2026
12	Vizrex Software Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Partial evidence “Vizrex Software Solutions builds custom software for startups, growing businesses, and complex operations.” Source: RevenueBase Database · checked Sep 13, 2026
13	Nenu Tech Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Partial evidence “Nenu Tech is a full service Application Development company.” Source: RevenueBase Database · checked Sep 13, 2026
14	Smarty Software	Strong evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
15	Codescrum	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
16	Miicon Solutions Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence “Miicon Solutions is a modern technology company delivering innovative, scalable, and high-performance digital solutions across web, mobile, and cloud platforms.” Source: RevenueBase Database · checked Sep 13, 2026
17	Infini Corporation	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Strong evidence “Infini is an app development company, delivering bespoke SaaS solutions to SME's and enterprise clients.” Source: RevenueBase Database · checked Sep 13, 2026
18	Datatherapy	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Strong evidence “Innovative FileMaker Development & Hosting – 20+ Years of Expertise DataTherapy is a specialist software company based in Kings Cross, London, with over 30 years of experience in…” Source: RevenueBase Database · checked Sep 13, 2026
19	Omnibyte Technologies	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Strong evidence “Omnibyte Technologies is a UK-based software development company specialising in SaaS solutions and custom software development.” Source: RevenueBase Database · checked Sep 13, 2026
20	Mped LTD	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	3 contacts →
	Strong 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 13, 2026
21	JAIGO	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
22	ABCUM	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	2 contacts →
	Strong 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 13, 2026
23	Wookify	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	2 contacts →
	Strong evidence “At Wookify, we're not your ordinary Software as a Service (SAAS) provider.” Source: RevenueBase Database · checked Sep 13, 2026
24	TIGIN	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “We're focused on bringing SaaS to market.” Source: RevenueBase Database · checked Sep 13, 2026
25	Expino Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 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 software development 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 software development companies.
Partial evidence: Its own public description names part of SaaS software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SaaS software development 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 120 SaaS software development companies based in London, United Kingdom

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SaaS software development companies based in London, United Kingdom at a glance

As of Sep 13, 2026

14.2%Verified-email coverage

3.0%Mobile-number coverage

9.5Average contacts per company

1-10Median size (employees)

172.5%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

1290–30

3331–60

061–90

090–180

0180+

Company record updated

Median 66.0d

00–30

42431–60

51961–90

13690–180

64180+

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 software development 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 “SaaS software development 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 software development 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 software development 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, 162 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 13, 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 software development companies by metro in the United Kingdom

SaaS software development companies in London207

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

RevenueBase identified 120 SaaS software development 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?

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

Which city has the most SaaS software development companies?

London leads with 207 headquartered companies, followed by Manchester (19) and Glasgow (11).

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 162 verified decision-maker contacts tracked across these 120 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 13, 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.