Company lists · Data refreshed September 2026

Top 25 SaaS platforms based in London, United Kingdom

Name: SaaS platforms 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 215 companies tracked

RevenueBase identified 215 SaaS platforms headquartered in London, United Kingdom as of September 2026 and tracks 1,881 professional contacts across them, including 718 with verified work emails and 112 with mobile numbers. London is the largest hub.

This list covers SaaS platforms 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

215Companies

1,881Contacts tracked

718Verified emails

112Mobile numbers

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The 25 largest SaaS platforms based in London, United Kingdom

Ranked by team size

Top 25 of 215 SaaS platforms 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 platforms: 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	PLUMM	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	n/a	155 contacts →
	Partial evidence “Plumm is the next-generation HR platform designed to replace your patchwork of tools with one powerful, integrated system.” Source: RevenueBase Database · checked Sep 13, 2026
2	PIRUM	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	136 contacts →
	Indirect evidence “Pirum was founded in with the objective of automating the securities finance and collateral management industries.” Source: RevenueBase Database · checked Sep 13, 2026
3	NTT Ltd. Cloud	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	105 contacts →
	Indirect evidence “Welcome to the home of NTT Ltd.” Source: RevenueBase Database · checked Sep 13, 2026
4	Shareforce	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	79 contacts →
	Indirect evidence “ShareForce is an online, cloud-based solution that brings all share scheme management tasks into one application.” Source: RevenueBase Database · checked Sep 13, 2026
5	POQ	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	54 contacts →
	Partial evidence “Poq is a Software-as-a-Service (SaaS) company that empowers retailers and DTC brands to create highly effective and fully-customized mobile native apps to provide a superior…” Source: RevenueBase Database · checked Sep 13, 2026
6	Unipaas	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	42 contacts →
	Partial evidence “Unipaas is the go-to Payment-as-a-Service provider for software platforms.” Source: RevenueBase Database · checked Sep 13, 2026
7	Domos FS	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	39 contacts →
	Indirect evidence “Domos FS is part of SimCorp.” Source: RevenueBase Database · checked Sep 13, 2026
8	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
9	Acting Office	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	35 contacts →
	Partial evidence “At Acting Office we deliver a fully integrated software platform designed for modern accountancy practices that want precision, efficiency and complete visibility across their…” Source: RevenueBase Database · checked Sep 13, 2026
10	Quantum-H	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	33 contacts →
	Partial evidence “Quantum-h is a full stack software as a service (SaaS) technology innovator that accelerates the adoption of emerging technologies for enterprises.” Source: RevenueBase Database · checked Sep 13, 2026
11	EYONA	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	31 contacts →
	Partial evidence “Eyona is a multi-product company specialising in B2B SaaS products.” Source: RevenueBase Database · checked Sep 13, 2026
12	Compugeen UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	31 contacts →
	Indirect evidence “Compugeen UK Ltd is a UK-incorporated enterprise technology services firm headquartered at 30 Churchill Place, London, providing sovereign cloud infrastructure, agentic AI…” Source: RevenueBase Database · checked Sep 13, 2026
13	Saastock	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	29 contacts →
	Indirect evidence “Where AI meets ARR Whether you’re building your first AI feature or rearchitecting your go-to-market, SaaStock gives you the frameworks, relationships, and energy to scale with…” Source: RevenueBase Database · checked Sep 13, 2026
14	Fliplet	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	26 contacts →
	Indirect evidence “Now anyone can create software with AI.” Source: RevenueBase Database · checked Sep 13, 2026
15	Ascendx	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	22 contacts →
	Partial 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 13, 2026
16	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
17	Aurora	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	20 contacts →
	Indirect evidence “Aurora is reshaping commercial underwriting with lead algorithmic underwriting.” Source: RevenueBase Database · checked Sep 13, 2026
18	Syntasso	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Partial evidence “Syntasso Kratix Enterprise (SKE) enables platform orchestration for the AI era.” Source: RevenueBase Database · checked Sep 13, 2026
19	Oskfel Software	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	17 contacts →
	Strong evidence “Introducing Merlin Enterprise Platform, a world class SaaS platform that is purpose built for the direct selling industry, powered by Oskfel Software Direct Selling Companies can…” Source: RevenueBase Database · checked Sep 13, 2026
20	Graphene	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Indirect 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 13, 2026
21	Robosme	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	15 contacts →
	Indirect 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 13, 2026
22	BCSG	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	15 contacts →
	Indirect evidence “BCSG is a leading cloud services marketplace provider; our experienced team has been providing IT applications to small businesses for the past 10 years in partnership with global…” Source: RevenueBase Database · checked Sep 13, 2026
23	Akoova LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Partial evidence “K-HOSTING FOR SUPREME ECOMMERCE BRANDS Akoova provides K-Hosting: a fully-tailored and automated cloud platform for Magento and Adobe Commerce hosting of supreme ecommerce brands…” Source: RevenueBase Database · checked Sep 13, 2026
24	Madx Digital	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Partial evidence “We provide end-to-end solutions for rapid SaaS growth, helping you develop tailored plans to scale your business, impress investors, and over-deliver to your customers.” Source: RevenueBase Database · checked Sep 13, 2026
25	Recognyte	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Indirect evidence “Recognyte has combined years of real estate knowledge alongside cutting-edge artificial intelligence, machine learning, and large-scale data collection, to reshape the landscape…” 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 platforms. 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 platforms.
Partial evidence: Its own public description names part of SaaS platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SaaS platforms. 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 215 SaaS platforms based in London, United Kingdom

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SaaS platforms based in London, United Kingdom at a glance

As of Sep 13, 2026

38.2%Verified-email coverage

6.0%Mobile-number coverage

8.7Average contacts per company

1-10Median size (employees)

98.1%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

119

11-50

51-200

201-500

Freshness & accuracy

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

Email last verified

Median 16.0d

5720–30

13831–60

761–90

090–180

1180+

Company record updated

Median 65.0d

00–30

81031–60

68761–90

26790–180

117180+

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 platforms, 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 platforms”. 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 platforms), 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 platforms, 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, 718 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 platforms by metro in the United Kingdom

SaaS platforms in London211

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 platforms, 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 platforms are there based in London, United Kingdom?

RevenueBase identified 215 SaaS platforms 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?

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

Which city has the most SaaS platforms?

London leads with 211 headquartered companies, followed by Manchester (15) and Bristol (10).

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 718 verified decision-maker contacts tracked across these 215 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.