Company lists · Data refreshed September 2026
Top 25 SaaS startups based in the United Kingdom
RevenueBase identified 325 SaaS startups headquartered in the United Kingdom as of September 2026 and tracks 11,541 professional contacts across them, including 5,906 with verified work emails. London is the largest hub.
This list covers SaaS startups 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 29, 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.
The 25 largest SaaS startups based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,100 contacts → | ||||
Indirect evidence “The Access Group is one of the largest UK-headquartered business management software providers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,218 contacts → | ||||
Indirect evidence “IRIS Software Group is a leading business software and services provider, one of the UK’s largest privately held software companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 177 contacts → | ||||
Indirect evidence “In 2009 SoftBrands was bought by Infor and is now a part of the Infor Hospitality Suite.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 156 contacts → | ||||
Indirect evidence “Inflo transforms the accounting profession by making leading-edge technologies accessible to all.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 87 contacts → | ||||
Indirect evidence “KPI is an all-in-one business solution providing: Accounting, Payroll, Sales, Human Resources, Project Management, Report and Document applications all in one platform according…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 75 contacts → | ||||
Strong evidence “Blue lotus 360 is SaaS startup backed by corporate accelerator program of John Keells Holdings PLC's which is the largest corporation in Sri Lanka.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 65 contacts → | ||||
Indirect evidence “Xledger is a leading provider of cloud-based finance software.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 64 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 53 contacts → | ||||
Indirect evidence “At Sci-Net Business Solutions (now part of the ANS Group) we are passionate and driven by the success of our customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 51 contacts → | ||||
Partial evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 41 contacts → | ||||
Indirect evidence “Pegasus Software is one of the UK's leading suppliers of accounting software, cloud accounting software, business solutions and payroll software and has been for over 30 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Indirect evidence “Ascarii is the UK's only dedicated SAP Business One Cloud partner.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 30 contacts → | ||||
Indirect evidence “Are you still using Cumbersome Excel Spreadsheets to manually track your leads, customers and invoices?” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 29 contacts → | ||||
Indirect evidence “At ARK IT Services, we focus on building practical software solutions that solve real business problems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 25 contacts → | ||||
Indirect evidence “STRATOS is a London-based technology company founded in 2022.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 25 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 23 contacts → | ||||
Indirect evidence “ProspectSoft is part of the ERP division at The Access Group, specialising in CRM & eCommerce.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 23 contacts → | ||||
Indirect evidence “Founded in 1982, Castle Computer Services provides accounting and financial management software, business intelligence solutions, cloud and managed IT services throughout the UK…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 22 contacts → | ||||
Indirect evidence “It’s business as usual for Oracle NetSuite Solution Provider and Microsoft Partner, BrightBridge – we just have a new name!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 22 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 20 contacts → | ||||
Strong evidence “SparkTech is an engineering partner for SaaS startups that outgrow their MVP.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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 startups. 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 startups.
- Partial evidence
- Its own public description names part of SaaS startups, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name SaaS startups. 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 325 SaaS startups based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,906 reachable decision-makers.
Free signup · no credit card
SaaS startups based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 325 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 SaaS startups, 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 startups”. 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 startups), 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 startups, 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, 5,906 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 29, 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 startups by metro
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 startups, 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 startups are there based in the United Kingdom?
RevenueBase identified 325 SaaS startups 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?
The Access Group, headquartered in Loughborough, tops this list with the largest team on record.
Which city has the most SaaS startups?
London leads with 127 headquartered companies, followed by Bristol (11) and Manchester (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 5,906 verified decision-maker contacts tracked across these 325 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 325 SaaS startups based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
SaaS startups by geography
- SaaS startups based in Sydney, Australia
- SaaS startups based in Sao Paulo, Brazil
- SaaS startups based in Toronto, Canada
- SaaS startups based in Paris, France
- SaaS startups based in Ahmedabad, India
- SaaS startups based in Bangalore, India
- SaaS startups based in Chennai, India
- SaaS startups based in Hyderabad, India
- SaaS startups based in Mumbai, India
- SaaS startups based in Noida, India
- SaaS startups based in Pune, India
- SaaS startups based in Singapore, Singapore
Browse the directory
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.