Company lists · Data refreshed September 2026

Top 25 SaaS development companies based in London, United Kingdom

Name: SaaS 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 115 companies tracked

RevenueBase identified 115 SaaS development companies headquartered in London, United Kingdom as of September 2026 and tracks 953 professional contacts across them, including 130 with verified work emails and 29 with mobile numbers. London is the largest hub.

This list covers SaaS 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

115Companies

953Contacts tracked

130Verified emails

29Mobile numbers

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

Ranked by team size

Top 25 of 115 SaaS 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 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	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	163 contacts →
	Indirect 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	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Partial 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	Ninos Global Tech	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	27 contacts →
	Indirect evidence “At Ninos Global Technology, we are passionate about empowering businesses and individuals with cutting-edge digital solutions.” Source: RevenueBase Database · checked Sep 13, 2026
6	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
7	Softexpoit	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Indirect 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
8	Vizrex Software Solutions	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
9	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
10	Smarty Software	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Partial 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
11	Codescrum	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect 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
12	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
13	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
14	Online50 Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Indirect 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 13, 2026
15	Cloud 9 Assist LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Indirect 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 13, 2026
16	Renav Technologies	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	4 contacts →
	Indirect evidence “At Renav, we help businesses move from fragmented systems to fully integrated digital platforms.” Source: RevenueBase Database · checked Sep 13, 2026
17	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
18	Cell 5	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	3 contacts →
	Partial evidence “Cell 5 is a UK-based, remote digital agency with a specialism in building start-up SaaS products from MVP through to scaling up.” Source: RevenueBase Database · checked Sep 13, 2026
19	Mped LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
20	ABCUM	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
21	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
22	Saas Consultants	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “SaaS Consultants help ambitious businesses of all sizes build and scale their management, operations and teams to fulfil their SaaS potential and aspirations.” Source: RevenueBase Database · checked Sep 13, 2026
23	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
24	Hardal Technologies	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “A technology company well-experienced in cloud services, software development and optimisation.” Source: RevenueBase Database · checked Sep 13, 2026
25	Synmek LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “Building powerful, scalable SaaS & Web Apps At Synmek, we partner with startups, small businesses, and B2B teams to design and develop custom digital products that scale.” 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 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 development companies.
Partial evidence: Its own public description names part of SaaS 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 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 115 SaaS development companies based in London, United Kingdom

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

As of Sep 13, 2026

13.6%Verified-email coverage

3.0%Mobile-number coverage

8.3Average contacts per company

1-10Median size (employees)

100.0%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

1000–30

3031–60

061–90

090–180

0180+

Company record updated

Median 64.0d

00–30

38831–60

40161–90

10590–180

59180+

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 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 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 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 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, 130 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 development companies by metro in the United Kingdom

SaaS development companies in London115

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 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 development companies are there based in London, United Kingdom?

RevenueBase identified 115 SaaS 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 development companies?

London leads with 115 headquartered companies, followed by Leeds (11) and Manchester (5).

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 130 verified decision-maker contacts tracked across these 115 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.