Company lists · Data refreshed September 2026

Top 25 Fintech app development firms based in London, United Kingdom

Name: Fintech app development firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 227 companies tracked

RevenueBase identified 227 fintech app development firms headquartered in London, United Kingdom as of September 2026 and tracks 28,287 professional contacts across them, including 12,541 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers fintech app development firms headquartered in London, 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 28, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

227Companies

28,287Contacts tracked

12,541Verified emails

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The 25 largest fintech app development firms based in London, United Kingdom

Ranked by team size

Top 25 of 227 fintech app development firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to fintech app development firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Revolut	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	16,636 contacts →
	Indirect evidence “People deserve more from their money.” Source: RevenueBase Database · checked Sep 28, 2026
2	Moniepoint Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	3,834 contacts →
	Indirect evidence “Moniepoint Inc.” Source: RevenueBase Database · checked Sep 28, 2026
3	Lendable	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	552 contacts →
	Indirect evidence “Lendable is a platform that makes borrowing money and saving money effortless; across loans, credit cards, car finance, utility bills, insurance, mobile contracts and more.” Source: RevenueBase Database · checked Sep 28, 2026
4	Options Technology	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	549 contacts →
	Indirect evidence “Options Technology (Options) is a financial technology company at the forefront of banking and trading infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
5	PPRO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	494 contacts →
	Partial evidence “PPRO is a fintech company that provides digital payment solutions to businesses and banks so that they can scale their local payment services through one connection.” Source: RevenueBase Database · checked Sep 28, 2026
6	Guavapay	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	441 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
7	Form3	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	273 contacts →
	Partial evidence “Form3 is a cloud-native payments technology company helping banks, fintechs and payment providers modernize their payments infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
8	10x Banking	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	266 contacts →
	Indirect evidence “10x Banking (10x) is a cloud‑native core banking platform built for financial institutions transforming to next-generation, 2040-ready technology.” Source: RevenueBase Database · checked Sep 28, 2026
9	CURVE	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	230 contacts →
	Indirect evidence “Curve is on a mission to simplify the way people spend, send, see and save money.” Source: RevenueBase Database · checked Sep 28, 2026
10	Fintech Farm	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	193 contacts →
	Partial evidence “Fintech Farm helps traditional banks to create and run digital banks (aka neobanks).” Source: RevenueBase Database · checked Sep 28, 2026
11	Openpayd	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	190 contacts →
	Indirect evidence “OpenPayd is building the universal financial infrastructure for the digital economy.” Source: RevenueBase Database · checked Sep 28, 2026
12	Edenred Payment Solutions	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	154 contacts →
	Indirect evidence “Edenred Payment Solutions is a payment solutions provider, enabling its clients to offer digital banking, embedded finance and card-based solutions to its customers.” Source: RevenueBase Database · checked Sep 28, 2026
13	Paynetics	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	132 contacts →
	Indirect evidence “Paynetics is a leader in B2B payments and a digital banking platform provider.” Source: RevenueBase Database · checked Sep 28, 2026
14	Bkn301	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	96 contacts →
	Partial evidence “BKN301 is a helping Banks and Fintechs, and.” Source: RevenueBase Database · checked Sep 28, 2026
15	Meniga	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	82 contacts →
	Indirect evidence “Meniga is a leading hyper-personalisation banking platform, providing best-in-class user experiences to over 100 million banking customers across 30 countries globally.” Source: RevenueBase Database · checked Sep 28, 2026
16	Flow Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	78 contacts →
	Partial evidence “Flow is a FinTech specifically focused on keeping retail businesses in developing markets flowing.” Source: RevenueBase Database · checked Sep 28, 2026
17	Macro Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	76 contacts →
	Partial evidence “Macro Global is a UK-based FinTech & RegTech company delivering enterprise-grade SaaS platforms for banks and financial institutions.” Source: RevenueBase Database · checked Sep 28, 2026
18	XPATE	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	72 contacts →
	Partial evidence “xpate is the payments provider built for fintechs and digital SMEs that makes it easier to pay, get paid and keep money flowing.” Source: RevenueBase Database · checked Sep 28, 2026
19	Rndpoint	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	71 contacts →
	Strong evidence “RNDpoint is a global software solutions provider with a focus on FinTech, AI, and software development productivity.” Source: RevenueBase Database · checked Sep 28, 2026
20	Payler	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	68 contacts →
	Indirect evidence “Integrated finance operating hub for global digital businesses.” Source: RevenueBase Database · checked Sep 28, 2026
21	OMNIO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “Omnio is a fintech company helping brands turn transactions into lasting customer relationships, combining payments, loyalty and insight to create smarter, more rewarding…” Source: RevenueBase Database · checked Sep 28, 2026
22	Nimble Appgenie	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	57 contacts →
	Strong evidence “At Nimble AppGenie, we are a global Fintech App Development Company delivering secure, scalable, and high-performance digital solutions for startups, enterprises, and financial…” Source: RevenueBase Database · checked Sep 28, 2026
23	Velmie	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	53 contacts →
	Strong evidence “Velmie is a digital banking system integrator and mobile app delivery partner for regulated fintech programs.” Source: RevenueBase Database · checked Sep 28, 2026
24	Fintilect	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	47 contacts →
	Indirect evidence “Fintilect is a digital banking platform provider focused exclusively on financial services.” Source: RevenueBase Database · checked Sep 28, 2026
25	Mymonty Europe	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	46 contacts →
	Indirect evidence “At MyMonty we're changing the game of financial services with innovative solutions.” Source: RevenueBase Database · checked Sep 28, 2026

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: fintech app development firms. 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 fintech app development firms.
Partial evidence: Its own public description names part of fintech app development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fintech app development firms. 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 227 fintech app development firms based in London, United Kingdom

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Fintech app development firms based in London, United Kingdom at a glance

As of Sep 28, 2026

44.3%Verified-email coverage

124.6Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 227 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 fintech app development firms, 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 London, United Kingdom whose own description of what they do matches “fintech app development firms”. 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 fintech app development firms), 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 fintech app development firms, and records with no verified work email. Companies headquartered outside London 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, 12,541 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 28, 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.

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 fintech app development firms, 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 fintech app development firms are there based in London, United Kingdom?

RevenueBase identified 227 fintech app development firms headquartered in London, 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?

Revolut, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most fintech app development firms?

London leads the United Kingdom with 227 headquartered companies, followed by Manchester (8) 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 12,541 verified decision-maker contacts tracked across these 227 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 28, 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 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.