Company lists · Data refreshed September 2026

Top 25 Lean software companies based in London, United Kingdom

Name: Lean 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 28, 2026 295 companies tracked

RevenueBase identified 295 lean software companies headquartered in London, United Kingdom as of September 2026 and tracks 3,077 professional contacts across them, including 594 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers lean 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 28, 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 28, 2026 86% judged on-target in blind review

295Companies

3,077Contacts tracked

594Verified emails

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The 25 largest lean software companies based in London, United Kingdom

Ranked by team size

Top 25 of 295 lean software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to lean 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	SENLA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	515 contacts →
	Partial evidence “In 2012, SENLA set out with a vision: to transform people's lives with exceptional software.” Source: RevenueBase Database · checked Sep 28, 2026
2	Parser	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	242 contacts →
	Indirect evidence “At Parser we help organisations deliver impact through technology.” Source: RevenueBase Database · checked Sep 28, 2026
3	Digis, A Fiverr Company Nyse Fvrr	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	163 contacts →
	Partial evidence “Digis is a leading software development company with a team of over.” Source: RevenueBase Database · checked Sep 28, 2026
4	ISB Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	119 contacts →
	Partial evidence “ISB Global develops and implements software, Waste & Recycling One (WR1), that integrates, automates, and simplifies to drive greater operational efficiency and profitability for…” Source: RevenueBase Database · checked Sep 28, 2026
5	COGNA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	71 contacts →
	Partial evidence “Cogna builds AI software for the hardest, highest-stakes work physical industries depend on.” Source: RevenueBase Database · checked Sep 28, 2026
6	unipro.io	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	71 contacts →
	Partial evidence “Unipro is a bespoke software studio that creates custom solutions to solve the most complex digital transformation challenges, giving our clients unparalleled control and lasting…” Source: RevenueBase Database · checked Sep 28, 2026
7	Raznameh Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	68 contacts →
	Partial evidence “We are a software development company based in the United Kingdom with some Europe, Asia, and eastern Europe offices.” Source: RevenueBase Database · checked Sep 28, 2026
8	Warrgyizmorsch	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	51 contacts →
	Indirect evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 28, 2026
9	Insight International UK LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	50 contacts →
	Partial evidence “We provide Software Development, Maintenance and Other Related IT Services, across spectrum, depending on individual client’s needs and dependability on us.” Source: RevenueBase Database · checked Sep 28, 2026
10	Silversoft	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	46 contacts →
	Partial evidence “Silversoft provides industry leading software to people and project centric firms globally with offices in the United Kingdom and South Africa & supporting over users across some…” Source: RevenueBase Database · checked Sep 28, 2026
11	SKO Systems	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Partial evidence “At SKO Systems, we engineer enterprise-grade software ecosystems designed for the unique, high-stakes realities of the maritime environment.” Source: RevenueBase Database · checked Sep 28, 2026
12	Hicom Technology Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	36 contacts →
	Indirect evidence “With 30 years' experience we offer a wide array of solutions and services to meet your business objectives and expectations.” Source: RevenueBase Database · checked Sep 28, 2026
13	AIME	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “At AIME, we believe in putting the customer first.” Source: RevenueBase Database · checked Sep 28, 2026
14	Softelegance	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial 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 28, 2026
15	Zentix	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “ZentixSoft is a UK-based software development company helping businesses grow faster with AI, automation, and custom software.” Source: RevenueBase Database · checked Sep 28, 2026
16	Lena Business Solutions	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Lena Business Solutions is a global solutions provider that supports and empowers businesses wherever they are in digital transformation.” Source: RevenueBase Database · checked Sep 28, 2026
17	Ninos Global Tech	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
18	Geniustags	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “GeniusTags is a software solutions company that was founded by entrepreneurs with long experience in the IT and humanitarian sectors.” Source: RevenueBase Database · checked Sep 28, 2026
19	E9 Internet Company	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “WE ARE HIRING - hr@e9.co.uk Building Technology Around Clients Not Clients around Technology.” Source: RevenueBase Database · checked Sep 28, 2026
20	Devsstream Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “DevsStream provides software development solutions and services all over the world.” Source: RevenueBase Database · checked Sep 28, 2026
21	Softexpoit	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
22	Firewood	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Firewood delivers mission-critical programmes.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sunbim	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “We are a product-centric tech firm specializing in innovative SaaS and custom software solutions, with a dedicated focus on design and engineering automation.” Source: RevenueBase Database · checked Sep 28, 2026
24	Vizrex Software Solutions	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
25	MAD Devs	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	10 contacts →
	Indirect evidence “Mad Devs, ИТ-компания со штаб-квартирой в Лондоне, разрабатывающая программные решения корпоративного уровня для бизнеса в сфере финансов, транспорта и логистики, безопасности…” Source: RevenueBase Database · checked Sep 28, 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: lean 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 lean software companies.
Partial evidence: Its own public description names part of lean software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lean 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 25 of 295 lean software companies based in London, United Kingdom

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

As of Sep 28, 2026

19.3%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

157

11-50

100

51-200

201-500

501-1,000

1,001-5,000

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 295 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 lean 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 “lean 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 lean 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 lean 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, 594 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 28, 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.

Lean software companies by metro in the United Kingdom

Lean software companies in Manchester33

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

RevenueBase identified 295 lean 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?

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

Which city in the United Kingdom has the most lean software companies?

London leads the United Kingdom with 295 headquartered companies, followed by Manchester (33) and Leeds (14).

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 594 verified decision-maker contacts tracked across these 295 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 28, 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.