Company lists · Data refreshed September 2026

Top 25 SaaS platforms based in the United Kingdom

Name: SaaS platforms 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 499 companies tracked

RevenueBase identified 499 SaaS platforms headquartered in the United Kingdom as of September 2026 and tracks 4,934 professional contacts across them, including 1,562 with verified work emails and 368 with mobile numbers. London is the largest hub.

This list covers SaaS platforms 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

499Companies

4,934Contacts tracked

1,562Verified emails

368Mobile numbers

Explore all 499 companies → Free signup · no credit card · 500 free credits

The 25 largest SaaS platforms based in the United Kingdom

Ranked by team size

Top 25 of 499 SaaS platforms 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 platforms: 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.
#	Company	Headquarters	Employees	Contacts
1	QuantiosIndirect evidence	Fleet, United KingdomHQ checked Sep 6, 2026	201-500	223
	“Quantios powers the digital future of the Wealth, Trust, and Corporate Services industry.” Source: company website · checked Sep 6, 2026
2	SoftbrandsIndirect evidence	Farnborough, United KingdomHQ checked Sep 6, 2026	501-1,000	177
	“In 2009 SoftBrands was bought by Infor and is now a part of the Infor Hospitality Suite.” Source: company website · checked Sep 6, 2026
3	PLUMMPartial evidence	London, United KingdomHQ checked Sep 6, 2026	n/a	155
	“Plumm is the next-generation HR platform designed to replace your patchwork of tools with one powerful, integrated system.” Source: company website · checked Sep 6, 2026
4	PIRUMIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	136
	“Pirum was founded in with the objective of automating the securities finance and collateral management industries.” Source: company website · checked Sep 6, 2026
5	QBS Software UK & IrelandStrong evidence	Wembley, United KingdomHQ checked Sep 6, 2026	201-500	117
	“QBS Software is a global leader in software distribution, offering a single platform with access to over SaaS products.” Source: company website · checked Sep 6, 2026
6	NTT Ltd. CloudIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	105
	“Welcome to the home of NTT Ltd.” Source: company website · checked Sep 6, 2026
7	ShareforceIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	79
	“ShareForce is an online, cloud-based solution that brings all share scheme management tasks into one application.” Source: company website · checked Sep 6, 2026
8	Arcus GlobalPartial evidence	Cambridge, United KingdomHQ checked Sep 6, 2026	51-200	78
	“Arcus is a SaaS company, delivering mission-critical core business solutions that empower public sector organisations to transform service delivery, enhance efficiency, and…” Source: company website · checked Sep 6, 2026
9	Blue Lotus 360Partial evidence	Gerrards Cross, United KingdomHQ checked Sep 6, 2026	51-200	75
	“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: company website · checked Sep 6, 2026
10	Workbooks CRMStrong evidence	Reading, United KingdomHQ checked Sep 6, 2026	51-200	64
	“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
11	CapsuleIndirect evidence	Manchester, United KingdomHQ checked Sep 6, 2026	11-50	55
	“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
12	POQPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	54
	“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: company website · checked Sep 6, 2026
13	Sci-Net Business SolutionsIndirect evidence	Chipping Norton, United KingdomHQ checked Sep 6, 2026	11-50	53
	“At Sci-Net Business Solutions (now part of the ANS Group) we are passionate and driven by the success of our customers.” Source: company website · checked Sep 6, 2026
14	UnipaasPartial evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	42
	“Unipaas is the go-to Payment-as-a-Service provider for software platforms.” Source: company website · checked Sep 6, 2026
15	Domos FSIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	39
	“Domos FS is part of SimCorp.” Source: company website · checked Sep 6, 2026
16	1st 4 Connect LimitedPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	38
	“1ST 4 Connect Limited’s core area of business is SAAS (software as a service also knows as software on demand).” Source: company website · checked Sep 6, 2026
17	Acting OfficePartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	35
	“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: company website · checked Sep 6, 2026
18	AptugoPartial evidence	Gallows Hill, United KingdomHQ checked Sep 6, 2026	n/a	35
	“Aptugo is an APP development platform working as a service.” Source: company website · checked Sep 6, 2026
19	CYCLRStrong evidence	Croydon, United KingdomHQ checked Sep 6, 2026	11-50	34
	“Cyclr is an embedded integration platform (embedded iPaaS) and MCP PaaS vendor for SaaS and AI applications.” Source: company website · checked Sep 6, 2026
20	Quantum-HPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	33
	“Quantum-h is a full stack software as a service (SaaS) technology innovator that accelerates the adoption of emerging technologies for enterprises.” Source: company website · checked Sep 6, 2026
21	EYONAPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	31
	“Eyona is a multi-product company specialising in B2B SaaS products.” Source: company website · checked Sep 6, 2026
22	ArchdeskIndirect evidence	Leicester, United KingdomHQ checked Sep 6, 2026	51-200	31
	“Archdesk cloud-based software delivers a management solution adapted to your business's specific needs.” Source: company website · checked Sep 6, 2026
23	Compugeen UK LimitedIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	31
	“Compugeen UK Ltd is a UK-incorporated enterprise technology services firm headquartered at 30 Churchill Place, London, providing sovereign cloud infrastructure, agentic AI…” Source: company website · checked Sep 6, 2026
24	SaastockIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	29
	“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: company website · checked Sep 6, 2026
25	AquariumIndirect evidence	Hale, United KingdomHQ checked Sep 6, 2026	11-50	27
	“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

Showing 25 of 499 SaaS platforms based in the United Kingdom

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SaaS platforms based in the United Kingdom at a glance

As of Sep 6, 2026

1-10Median size (employees)

LondonLargest hub · 211 HQs

368Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

285

11-50

176

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

1,450

31–60

108

61–90

90–180

180+

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 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 platforms”. 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 platforms, 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, 1,562 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 platforms by metro

SaaS platforms in London211

Frequently asked

How many SaaS platforms are there based in the United Kingdom?

RevenueBase identified 499 SaaS platforms 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?

Quantios, headquartered in Fleet, 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 1,562 verified decision-maker contacts tracked across these 499 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.