Company lists · Data refreshed September 2026

Top 25 Fintech api providers based in the United Kingdom

RevenueBase identified 104 company matches for fintech api providers associated with the United Kingdom as of September 2026 and tracks 2,753 professional contacts across them, including 1,182 with verified work emails and 135 with mobile numbers. London is the largest hub.

This list covers company matches for fintech api providers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 2, 2026 How this list was built
104Companies
2,753Contacts tracked
1,182Verified emails
135Mobile numbers
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The 25 largest fintech api providers based in the United Kingdom

Ranked by team size
Top 25 of 104 company matches for fintech api providers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 2, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United Kingdom501-1,000752 contacts →

Exact match

“Build Bold.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
2Exact matchLondon, United Kingdom201-500435 contacts →

Exact match

“We are a company on a mission to build a global financial ecosystem that empowers individuals and businesses to have more control over their financial lives.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
3Exact matchLondon, United Kingdom51-200189 contacts →

Exact match

“OpenPayd is building the universal financial infrastructure for the digital economy.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
4Exact matchLondon, United Kingdom51-200118 contacts →

Exact match

“Embed bank accounts, payments, and all kinds of financial products quickly via our simple API.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
5Exact matchLondon, United Kingdom51-200115 contacts →

Exact match

“Yapily is Europe’s leading open banking infrastructure platform solving a fundamental problem in financial services today: access.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
6Exact matchLondon, United Kingdom51-20098 contacts →

Exact match

“BKN301 is a helping Banks and Fintechs, and.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
7Exact matchLondon, United Kingdom11-5074 contacts →

Exact match

“xpate is the payments provider built for fintechs and digital SMEs that makes it easier to pay, get paid and keep money flowing.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
8Exact matchLondon, United Kingdom51-20066 contacts →

Exact match

“Ozone API is the leading standards based platform that handles the complexity of open banking, making it easy for any financial institution to meet both regulatory and commercial…”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
9Exact matchUnited Kingdom51-20066 contacts →

Exact match

“Yaspa is making instant payments personal.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
10Exact matchEdinburgh, United Kingdom51-20061 contacts →

Exact match

“TranSwap is an award-winning fintech provider that's customisable to your business needs.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
11Exact matchLeicester, United Kingdom51-20047 contacts →

Exact match

“Blinqpay is made up of a team of financial experts, entrepreneurs and engineers passionate about driving innovation in the African Fintech space.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
12Exact matchUnited Kingdom51-20038 contacts →

Exact match

“Monevo, a TransUnion company, is an award-winning B2BC personal credit platform and API focused on improving access to credit in what is currently a highly fragmented marketplace.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
13Exact matchLondon, United Kingdom11-5037 contacts →

Exact match

“Triver provides small businesses with instant capital in a click.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
14Exact matchLondon, United Kingdom11-5032 contacts →

Exact match

“At Crezco, we’re redefining how businesses move money.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
15Exact matchLondon, United Kingdom11-5030 contacts →

Exact match

“Ecospend is a financial data and payments platform built exclusively for Open Finance since the inception of PSD2.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
16Exact matchLondon, United Kingdom11-5026 contacts →

Exact match

“Simplify Synergy is a transformative FinTech startup that provides innovative technological solutions.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
17Exact matchLondon, United Kingdom51-20022 contacts →

Exact match

“Nuapay is a pioneer of Open Banking and the industry’s leading Account-2-Account payment environment.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
18Exact matchLondon, United Kingdom11-5021 contacts →

Exact match

“Pannovate is a Banking-as-a-Service platform and orchestration layer that empowers financial and non-financial organisations to deliver seamless digital experiences and embedded…”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
19Exact matchLondon, United Kingdom51-20018 contacts →

Exact match

“Merge is a fintech that is merging stablecoins and instant payment rails in one API.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
20Exact matchLondon, United Kingdom11-5018 contacts →

Exact match

“Teller is the API for bank accounts.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
21Exact matchLondon, United Kingdom11-5016 contacts →

Exact match

“Zeux IT Services was born from growing need of fintech infrastructure solutions in the industry.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
22Exact matchLondon, United Kingdom11-5016 contacts →

Exact match

“Open Banking and Global Real-time Payment Infrastructure”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
23Exact matchLondon, United Kingdom11-5014 contacts →

Exact match

“We provide a single point of integration to all your payment needs.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
24Exact matchLondon, United Kingdom51-20014 contacts →

Exact match

“Finular is a leading multinational FinTech (Financial Technology) group operating across the US, UK, Europe and MENA.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
25Exact matchLondon, United Kingdom11-5013 contacts →

Exact match

“Transforming financial futures.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase

Showing 25 of 104 fintech api providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,182 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fintech api providers based in the United Kingdom at a glance

As of Sep 2, 2026
42.9%Verified-email coverage
4.9%Mobile-number coverage
26.5Average contacts per company
11-50Median size (employees)
77.9%Largest-city concentration · London
Sep 2, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
45
51-200
21
201-500
2
501-1,000
3

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “fintech api providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,182 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Fintech api providers by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fintech api providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fintech api providers are there based in the United Kingdom?

RevenueBase identified 104 company matches for fintech api providers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

RAPYD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most fintech api providers?

London leads with 81 company records, followed by Edinburgh (3) and Bournemouth (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,182 professional contacts with verified work emails tracked across these 104 companies; direct dials are available where recorded.

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.