Company lists · Data refreshed September 2026
Top 25 Financial transaction software companies based in the United Kingdom
RevenueBase identified 170 financial transaction software companies headquartered in the United Kingdom as of September 2026 and tracks 5,148 professional contacts across them, including 907 with verified work emails and 319 with mobile numbers. London is the largest hub.
This list covers financial transaction software companies 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 2, 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.
The 25 largest financial transaction software companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 488 | ||||
“Paymentsense, now Dojo!” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 425 | ||||
“IT SOFTWARE -the Technancial Company- is focused on designing and developing cutting-edge solutions to satisfy the needs of the most sophisticated financial institutions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 356 | ||||
“We combine the power of People, Data, and Software to deliver unrivalled customer experiences.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | 327 | ||||
“Established in in New Zealand, Windcave stands as a high-growth, innovative leader in payment technology.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 167 | ||||
“Retail Merchant Services is a fast-growing payment services and software provider, combining our shared ambition to provide care and technology that can help small businesses…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 112 | ||||
“Cayan is hiring!” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 107 | ||||
“Research and innovation keep The ai Corporation at the forefront of the fleet and mobility payments industry.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 90 | ||||
“At BR-DGE, we’re committed to pushing the boundaries of payment technology and redefining the payments ecosystem.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 85 | ||||
“Pinion is a professional services firm focused primarily on payment-solutions technologies and information management.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 76 | ||||
“Financial House, a trusted provider of financial services, offers merchant acquiring and card-issuing solutions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 45 | ||||
“We create a future where finance and payment technologies are truly effortless-zero delays, zero complexity, zero stress.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | Yourcash UK & IrelandIndirect evidence | 38 | |||
“We have had an interesting journey over the last 17 years.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 | ||||
“Payadmit is a cutting-edge payment software provider created by a team of industry professionals with 10+ years of hands-on experience in the payment industry.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 35 | ||||
“Total Processing is a Fintech Company disrupting the payments sector through the delivery of custom payment solutions across e-commerce and in-store channels worldwide.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 35 | ||||
“Our mission is to transform the technology and payments landscape with innovative, secure, and personalised solutions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | PAYENIndirect evidence | 30 | |||
“Trustpay Global has a new name and brand identity, Payen.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 27 | ||||
“Card Saver is one of the UK’s fastest-growing card payment processing providers and is proud to be at the forefront of payment industry technology offering contactless, Apple Pay…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 25 | ||||
“Apak Group is now known as Sopra Banking Software, with it's market leading solutions now forming the heart of the Sopra Financing Platform.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | 24 | ||||
“Building Businesses.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | 23 | ||||
“We provide the infrastructure for enterprises and financial institutions to build and manage their payment programs.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | Ubank ConnectIndirect evidence | 22 | |||
“Reach emerging markets in the easiest way possible and start boosting your business with UBank Connect.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 21 | ||||
“Optimising payment processes means reducing the complex to the critical.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | 21 | ||||
“Afferent Software specialises in creating innovative Payments solutions that make our customers money and simplify the building, testing and running of Payments switches.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | Nexum SoftwareIndirect evidence | 19 | |||
“CHANGING TECHNOLOGIES At NEXUM we adopt an open mind to product and commercial strategy.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | VallettapayIndirect evidence | 18 | |||
“VallettaPay is a fully fledged global payments solution.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 170 financial transaction software companies based in the United Kingdom
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Financial transaction software companies based in the United Kingdom at a glance
As of Sep 2, 2026Companies by employee count
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 financial transaction software companies, 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 “financial transaction software companies”. 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 financial transaction software companies, 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, 907 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 2, 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.
Financial transaction software companies by metro
- Financial transaction software companies in London84
Frequently asked
How many financial transaction software companies are there based in the United Kingdom?
RevenueBase identified 170 financial transaction software companies 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?
Paymentsense, headquartered in London, tops this list with the largest team on record.
Which city has the most financial transaction software companies?
London leads with 84 headquartered companies, followed by Leeds (4) and Birmingham (4).
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 907 verified decision-maker contacts tracked across these 170 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 2, 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.
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