Company lists · Data refreshed September 2026

Top 25 SaaS platform developers based in the United Kingdom

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, how directly it supports the match, 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 SmartSearch, 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 Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
223Companies
2,138Contacts tracked
434Verified emails
180Mobile numbers
Explore all 223 companies → Free signup · no credit card · 500 free credits

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. Evidence rates how directly each company's own description names SaaS platform developers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
HornbillIndirect evidence
London, United KingdomHQ checked Sep 6, 202651-20085

“Hornbill is an innovator of cloud-based business collaboration technology and applications that engage teams, optimise operations and deliver better customer experiences.”

Source: company website · checked Sep 6, 2026
2
Workbooks CRMStrong evidence
Reading, United KingdomHQ checked Sep 6, 202651-20064

“Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.”

Source: company website · checked Sep 6, 2026
3
OptimiserIndirect evidence
London, United KingdomHQ checked Sep 6, 202651-20057

“Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…”

Source: company website · checked Sep 6, 2026
4
CapsuleIndirect evidence
Manchester, United KingdomHQ checked Sep 6, 202611-5055

“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: company website · checked Sep 6, 2026
5
AptugoPartial evidence
Gallows Hill, United KingdomHQ checked Sep 6, 2026n/a35

“Aptugo is an APP development platform working as a service.”

Source: company website · checked Sep 6, 2026
6
CYCLRStrong evidence
Croydon, United KingdomHQ checked Sep 6, 202611-5034

“Cyclr is an embedded integration platform (embedded iPaaS) and MCP PaaS vendor for SaaS and AI applications.”

Source: company website · checked Sep 6, 2026
7
WEB Alliance LimitedIndirect evidence
Northampton, United KingdomHQ checked Sep 6, 202611-5030

“Are you still using Cumbersome Excel Spreadsheets to manually track your leads, customers and invoices?”

Source: company website · checked Sep 6, 2026
8
AquariumIndirect evidence
Hale, United KingdomHQ checked Sep 6, 202611-5027

“We are an elite group of entrepreneurial technologists who in 2006 founded Aquarium and brought a shared vision to life.”

Source: company website · checked Sep 6, 2026
9
Gold-Vision CRMPartial evidence
Northampton, United KingdomHQ checked Sep 6, 202611-5025

“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: company website · checked Sep 6, 2026
10
Prospect CRMIndirect evidence
Loughborough, United KingdomHQ checked Sep 6, 202651-20023

“ProspectSoft is part of the ERP division at The Access Group, specialising in CRM & eCommerce.”

Source: company website · checked Sep 6, 2026
11
AscendxPartial evidence
London, United KingdomHQ checked Sep 6, 20261-1022

“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: company website · checked Sep 6, 2026
12
ItouchvisionIndirect evidence
London, United KingdomHQ checked Sep 6, 202611-5022

“iTouchVision is one of the world's leading cloud-based service providers with innovation & excellence at its base.”

Source: company website · checked Sep 6, 2026
13
KINDEStrong evidence
Sydney, United KingdomHQ checked Sep 6, 202611-5021

“Kinde is a fully-integrated developer platform, providing SaaS and AI app infrastructure to thousands of businesses globally.”

Source: company website · checked Sep 6, 2026
14
Blue SheepIndirect evidence
Cheltenham, United KingdomHQ checked Sep 6, 20261-1019
Source: company website · checked Sep 6, 2026
15
ZumzumIndirect evidence
Stockport, United KingdomHQ checked Sep 6, 202611-5018

“Zumzum helps you transform your Lead-2-Cash process and the way your people work to become a real time business.”

Source: company website · checked Sep 6, 2026
16
Delisys TechnologiesIndirect evidence
Nottingham, United KingdomHQ checked Sep 6, 202611-5017

“Empowering Businesses with Cloud, AI, and Automation.”

Source: company website · checked Sep 6, 2026
17
Awesome Business ToolsPartial evidence
Manchester, United KingdomHQ checked Sep 6, 20261-1017

“Awesome SaaS tools to supercharge your business.”

Source: company website · checked Sep 6, 2026
18
AvrionIndirect evidence
Stevenage, United KingdomHQ checked Sep 6, 202611-5016

“We deliver software solutions that help our customers work smarter using technologies to streamline operations, improve performance, and gain long-term scalable growth.”

Source: company website · checked Sep 6, 2026
19
RobosmeIndirect evidence
London, United KingdomHQ checked Sep 6, 202611-5015

“Robosme - CRM to Win Easy to use cloud CRM that automates your business and benefits every process you touch the customer.”

Source: company website · checked Sep 6, 2026
20
Cambridge KineticsIndirect evidence
Cambridge, United KingdomHQ checked Sep 6, 202611-5014

“Cambridge Kinetics is an award-winning software team based in Cambridge, UK and the brains behind Kinabase.”

Source: company website · checked Sep 6, 2026
21
OpencrmIndirect evidence
Richmond, United KingdomHQ checked Sep 6, 202611-5012

“Our advanced, fully featured CRM software is easy to use and intuitive with a familiar interface and powerful features.”

Source: company website · checked Sep 6, 2026
22
Q CHI LimitedIndirect evidence
Swindon, United KingdomHQ checked Sep 6, 202611-5012

“Founded in 2001, Q:chi specialises in cloud-based collaborative software solutions that drive efficiency and transparency for sales and marketing teams.”

Source: company website · checked Sep 6, 2026
23
InforgenIndirect evidence
Peebles, United KingdomHQ checked Sep 6, 202611-5011

“At Inforgen we specialise in web-based business management software for the mid market.”

Source: company website · checked Sep 6, 2026
24
BrightofficeIndirect evidence
Preston, United KingdomHQ checked Sep 6, 202611-5011

“BrightOffice are a software and services company.”

Source: company website · checked Sep 6, 2026
25
AIRPAPartial evidence
London, United KingdomHQ checked Sep 6, 20261-1010

“AIRPA brings together market-leading apps and processes, covering all of your business functions, and connecting them under one integrated, intuitive platform.”

Source: company website · checked Sep 6, 2026

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
1-10Median size (employees)
LondonLargest hub · 91 HQs
180Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
141
11-50
65
51-200
9
201-500
6
1,001-5,000
1
10001+
1

Verified emails by last verification

0–30
402
31–60
31
61–90
0
90–180
0
180+
1

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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 SmartSearch, 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.