Company lists · Data refreshed September 2026

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

Name: Fintech app development services 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 170 companies tracked

RevenueBase identified 170 fintech app development services headquartered in London, United Kingdom as of September 2026 and tracks 6,880 professional contacts across them, including 1,309 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers fintech app development services 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

170Companies

6,880Contacts tracked

1,309Verified emails

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

Ranked by team size

Top 25 of 170 fintech app development services 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 services: 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	SPD Technology	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Partial evidence “SPD Technology is a global software product development company with over 650 talents and delivery centers across Europe.” Source: RevenueBase Database · checked Sep 28, 2026
2	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
3	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
4	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
5	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
6	Riskcare	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial evidence “Riskcare is a financial services consultancy at the forefront of Fintech innovation, delivering world-class trading and risk technology, with offices in London and New York.” Source: RevenueBase Database · checked Sep 28, 2026
7	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
8	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
9	DLT Apps	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	50 contacts →
	Indirect evidence “We are an innovative engineering team, focused on transforming financial services globally.” Source: RevenueBase Database · checked Sep 28, 2026
10	Totallymoney	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Indirect evidence “TotallyMoney is one of the UK’s best companies to work for, voted 9th best in finance and 5th best mid-sized company in London.” Source: RevenueBase Database · checked Sep 28, 2026
11	Mwan Mobile	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	41 contacts →
	Strong evidence “MWAN Mobile provides products, software development services and consulting in the Blockchain, Fintech & Mobile payments and the Mobile and Digital space.” Source: RevenueBase Database · checked Sep 28, 2026
12	JPSB	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect evidence “JPSB Group is a global financial technology consultancy comprised of senior professionals, operating from locations in the UK, Canada, and the US.” Source: RevenueBase Database · checked Sep 28, 2026
13	Finhub	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	40 contacts →
	Indirect evidence “At Finhub, we are building the infrastructure powering the next generation of embedded finance, digital banking, and payment ecosystems across the UK, Europe, Switzerland, and…” Source: RevenueBase Database · checked Sep 28, 2026
14	Netdania	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	34 contacts →
	Indirect evidence “Established in 1998, Netdania has emerged as a leading figure in financial technology.” Source: RevenueBase Database · checked Sep 28, 2026
15	Simplify Synergy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Simplify Synergy is a transformative FinTech startup that provides innovative technological solutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Chronicle Software	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Founded in 2013 by Java Champion Peter Lawrey, Chronicle Software is on a mission to revolutionise financial technology through proven practices and collaboration.” Source: RevenueBase Database · checked Sep 28, 2026
17	KAF Technology	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “KAF Technology is one of the leading fintech company that has transformed the industry by providing niche and robust financial solutions for the customers in the region.” Source: RevenueBase Database · checked Sep 28, 2026
18	Pri-Num	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	17 contacts →
	Partial evidence “Pri-Num is a leading fintech company specializing in digital payment solutions and technology implementation.” Source: RevenueBase Database · checked Sep 28, 2026
19	Zeux IT Services	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Zeux IT Services was born from growing need of fintech infrastructure solutions in the industry.” Source: RevenueBase Database · checked Sep 28, 2026
20	Attix AI UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	16 contacts →
	Indirect evidence “Innovation Meets Excellence Providing transformative AI solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Finxone	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Finxone is a revolutionary fintech platform that empowers anyone to build their own financial applications without any coding knowledge.” Source: RevenueBase Database · checked Sep 28, 2026
22	D Code IT	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “We’re a digital design and development studio that have been transforming the way major financial institutions and enterprises work, think and perform for 10+ years.” Source: RevenueBase Database · checked Sep 28, 2026
23	Orbit Financial Technology	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Orbit is an AI-powered platform for financial services, combining an AI Studio with a comprehensive knowledge base giving you an accuracy, transparency, and efficiency that was…” Source: RevenueBase Database · checked Sep 28, 2026
24	Fideumhq	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Fideum is a dynamic fintech firm on a mission to streamline the digital transformation of financial institutions, banks, and SMEs with a turn-key, regulatory-compliant and…” Source: RevenueBase Database · checked Sep 28, 2026
25	Opentecc	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	13 contacts →
	Indirect evidence “Opentecc is a specialized technology company that builds innovative web and mobile applications.” 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 services. 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 services.
Partial evidence: Its own public description names part of fintech app development services, 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 services. 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 170 fintech app development services based in London, United Kingdom

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

As of Sep 28, 2026

19.0%Verified-email coverage

40.5Average 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

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 170 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 services, 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 services”. 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 services), 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 services, 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, 1,309 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 services, 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 services are there based in London, United Kingdom?

RevenueBase identified 170 fintech app development services 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?

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

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

London leads the United Kingdom with 170 headquartered companies, followed by Leeds (7) and Brighton (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 1,309 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 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.