Company lists · Data refreshed September 2026

Top 25 SaaS platform developers based in the United Kingdom

Name: SaaS platform developers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 223 companies tracked

RevenueBase identified 223 SaaS platform developers headquartered in the United Kingdom as of September 2026 and tracks 2,138 professional contacts across them, including 434 with verified work emails and 180 with mobile numbers. London is the largest hub.

This list covers SaaS platform developers headquartered in the 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 6, 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 6, 2026 86% judged on-target in blind review

223Companies

2,138Contacts tracked

434Verified emails

180Mobile numbers

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The 25 largest SaaS platform developers based in the United Kingdom

Ranked by team size

Top 25 of 223 SaaS platform developers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to SaaS platform developers: 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	Hornbill	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	85 contacts →
	Indirect evidence “Hornbill is an innovator of cloud-based business collaboration technology and applications that engage teams, optimise operations and deliver better customer experiences.” Source: RevenueBase Database · checked Sep 6, 2026
2	Workbooks CRM	Strong evidence	Reading, United KingdomHQ checked Sep 6, 2026	51-200	64 contacts →
	Strong evidence “Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Source: RevenueBase Database · checked Sep 6, 2026
3	Optimiser	Indirect evidence	London, United KingdomHQ checked Sep 6, 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 6, 2026
4	Capsule	Indirect evidence	Manchester, United KingdomHQ checked Sep 6, 2026	11-50	55 contacts →
	Indirect evidence “Capsule was launched in 2009 following the founders' frustration with existing CRM services that were either overly simplistic or far too complex for most businesses.” Source: RevenueBase Database · checked Sep 6, 2026
5	Aptugo	Partial evidence	Gallows Hill, United KingdomHQ checked Sep 6, 2026	n/a	35 contacts →
	Partial evidence “Aptugo is an APP development platform working as a service.” Source: RevenueBase Database · checked Sep 6, 2026
6	CYCLR	Strong evidence	Croydon, United KingdomHQ checked Sep 6, 2026	11-50	34 contacts →
	Strong evidence “Cyclr is an embedded integration platform (embedded iPaaS) and MCP PaaS vendor for SaaS and AI applications.” Source: RevenueBase Database · checked Sep 6, 2026
7	WEB Alliance Limited	Indirect evidence	Northampton, United KingdomHQ checked Sep 6, 2026	11-50	30 contacts →
	Indirect evidence “Are you still using Cumbersome Excel Spreadsheets to manually track your leads, customers and invoices?” Source: RevenueBase Database · checked Sep 6, 2026
8	Aquarium	Indirect evidence	Hale, United KingdomHQ checked Sep 6, 2026	11-50	27 contacts →
	Indirect evidence “We are an elite group of entrepreneurial technologists who in 2006 founded Aquarium and brought a shared vision to life.” Source: RevenueBase Database · checked Sep 6, 2026
9	Gold-Vision CRM	Partial evidence	Northampton, United KingdomHQ checked Sep 6, 2026	11-50	25 contacts →
	Partial evidence “Gold-Vision CRM is a highly configurable, user-friendly customer relationship management (CRM) platform designed to unify and streamline sales and marketing processes for…” Source: RevenueBase Database · checked Sep 6, 2026
10	Prospect CRM	Indirect evidence	Loughborough, United KingdomHQ checked Sep 6, 2026	51-200	23 contacts →
	Indirect evidence “ProspectSoft is part of the ERP division at The Access Group, specialising in CRM & eCommerce.” Source: RevenueBase Database · checked Sep 6, 2026
11	Ascendx	Partial evidence	London, United KingdomHQ checked Sep 6, 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 6, 2026
12	Itouchvision	Indirect evidence	London, United KingdomHQ checked Sep 6, 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 6, 2026
13	KINDE	Strong evidence	Sydney, United KingdomHQ checked Sep 6, 2026	11-50	21 contacts →
	Strong evidence “Kinde is a fully-integrated developer platform, providing SaaS and AI app infrastructure to thousands of businesses globally.” Source: RevenueBase Database · checked Sep 6, 2026
14	Blue Sheep	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 6, 2026	1-10	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
15	Zumzum	Indirect evidence	Stockport, United KingdomHQ checked Sep 6, 2026	11-50	18 contacts →
	Indirect evidence “Zumzum helps you transform your Lead-2-Cash process and the way your people work to become a real time business.” Source: RevenueBase Database · checked Sep 6, 2026
16	Delisys Technologies	Indirect evidence	Nottingham, United KingdomHQ checked Sep 6, 2026	11-50	17 contacts →
	Indirect evidence “Empowering Businesses with Cloud, AI, and Automation.” Source: RevenueBase Database · checked Sep 6, 2026
17	Awesome Business Tools	Partial evidence	Manchester, United KingdomHQ checked Sep 6, 2026	1-10	17 contacts →
	Partial evidence “Awesome SaaS tools to supercharge your business.” Source: RevenueBase Database · checked Sep 6, 2026
18	Avrion	Indirect evidence	Stevenage, United KingdomHQ checked Sep 6, 2026	11-50	16 contacts →
	Indirect evidence “We deliver software solutions that help our customers work smarter using technologies to streamline operations, improve performance, and gain long-term scalable growth.” Source: RevenueBase Database · checked Sep 6, 2026
19	Robosme	Indirect evidence	London, United KingdomHQ checked Sep 6, 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 6, 2026
20	Cambridge Kinetics	Indirect evidence	Cambridge, United KingdomHQ checked Sep 6, 2026	11-50	14 contacts →
	Indirect evidence “Cambridge Kinetics is an award-winning software team based in Cambridge, UK and the brains behind Kinabase.” Source: RevenueBase Database · checked Sep 6, 2026
21	Opencrm	Indirect evidence	Richmond, United KingdomHQ checked Sep 6, 2026	11-50	12 contacts →
	Indirect evidence “Our advanced, fully featured CRM software is easy to use and intuitive with a familiar interface and powerful features.” Source: RevenueBase Database · checked Sep 6, 2026
22	Q CHI Limited	Indirect evidence	Swindon, United KingdomHQ checked Sep 6, 2026	11-50	12 contacts →
	Indirect evidence “Founded in 2001, Q:chi specialises in cloud-based collaborative software solutions that drive efficiency and transparency for sales and marketing teams.” Source: RevenueBase Database · checked Sep 6, 2026
23	Inforgen	Indirect evidence	Peebles, United KingdomHQ checked Sep 6, 2026	11-50	11 contacts →
	Indirect evidence “At Inforgen we specialise in web-based business management software for the mid market.” Source: RevenueBase Database · checked Sep 6, 2026
24	Brightoffice	Indirect evidence	Preston, United KingdomHQ checked Sep 6, 2026	11-50	11 contacts →
	Indirect evidence “BrightOffice are a software and services company.” Source: RevenueBase Database · checked Sep 6, 2026
25	AIRPA	Partial evidence	London, United KingdomHQ checked Sep 6, 2026	1-10	10 contacts →
	Partial evidence “AIRPA brings together market-leading apps and processes, covering all of your business functions, and connecting them under one integrated, intuitive platform.” Source: RevenueBase Database · checked Sep 6, 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 platform developers. 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 platform developers.
Partial evidence: Its own public description names part of SaaS platform developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SaaS platform developers. 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 223 SaaS platform developers based in the United Kingdom

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SaaS platform developers based in the United Kingdom at a glance

As of Sep 6, 2026

20.3%Verified-email coverage

8.4%Mobile-number coverage

9.6Average contacts per company

1-10Median size (employees)

40.8%Largest-city concentration · London

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

141

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4020–30

3131–60

061–90

090–180

1180+

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 platform developers, 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 the United Kingdom whose own description of what they do matches “SaaS platform developers”. 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 platform developers), 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 platform developers, and records with no verified work email. Companies headquartered outside United Kingdom 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, 434 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 6, 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 platform developers by metro

SaaS platform developers in London91

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 platform developers, 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 platform developers are there based in the United Kingdom?

RevenueBase identified 223 SaaS platform developers headquartered in the 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?

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

Which city has the most SaaS platform developers?

London leads with 91 headquartered companies, followed by Manchester (6) and Bristol (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 434 verified decision-maker contacts tracked across these 223 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 6, 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.