Company lists · Data refreshed September 2026

Top 25 Financial services software developers based in the United Kingdom

Name: Financial services software developers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 215 companies tracked

RevenueBase identified 215 financial services software developers headquartered in the United Kingdom as of September 2026 and tracks 4,795 professional contacts across them, including 1,611 with verified work emails and 303 with mobile numbers. London is the largest hub.

This list covers financial services software developers 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.

How to read this list Match evidence on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

215Companies

4,795Contacts tracked

1,611Verified emails

303Mobile numbers

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The 25 largest financial services software developers based in the United Kingdom

Ranked by team size

Top 25 of 215 financial services software developers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. Evidence rates how directly each company's own description names financial services software developers: 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	Finiq ConsultingStrong evidence	London, United Kingdom	201-500	513
	“FinIQ is a specialist software vendor for capital markets trading and investments, catering to the needs of over 50 financial institutions worldwide.” Source: company website · checked Sep 2, 2026
2	IT SoftwareStrong evidence	London, United Kingdom	51-200	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, 2026
3	FinsurgePartial evidence	London, United Kingdom	201-500	302
	“At FinSurge, we are at the forefront of transforming the global financial landscape.” Source: company website · checked Sep 2, 2026
4	Sandstone TechnologyPartial evidence	Leeds, United Kingdom	201-500	281
	“For more than 25 years, Sandstone Technology has been innovating and evolving financial solutions for some of the world’s largest banks and financial institutions.” Source: company website · checked Sep 2, 2026
5	Onezero Financial SystemsPartial evidence	London, United Kingdom	201-500	172
	“oneZero develops multi-asset class trading technology, which empowers financial institutions and brokers to compete in today’s ever-changing global markets.” Source: company website · checked Sep 2, 2026
6	Neptune Software GroupIndirect evidence	London, United Kingdom	201-500	158
	“Traditionally, core banking solutions revolved around products rather than customer needs.” Source: company website · checked Sep 2, 2026
7	ProfidataIndirect evidence	London, United Kingdom	201-500	144
	“We create value for investment managers.” Source: company website · checked Sep 2, 2026
8	EurobaseStrong evidence	Ore, United Kingdom	51-200	78
	“Eurobase is an international software and service provider to financial institutions in over 25 countries.” Source: company website · checked Sep 2, 2026
9	Neptune NorthStrong evidence	Newcastle Upon Tyne, United Kingdom	51-200	76
	“At Neptune North we specialise in providing software development and consulting services to businesses operating in the Financial Services and Alternative Investment markets.” Source: company website · checked Sep 2, 2026
10	SingletrackIndirect evidence	London, United Kingdom	51-200	72
	“Singletrack Sell Side helps banks, brokers and IRPs leverage their research, sales and corporate assets to maximum advantage in an increasingly competitive marketplace.” Source: company website · checked Sep 2, 2026
11	Dunstan Thomas DTIndirect evidence	Portsmouth, United Kingdom	51-200	69
	“Dunstan Thomas (DT) are a leading UK WealthTech partner, having spent over 30 years at the heart of WealthTech innovation.” Source: company website · checked Sep 2, 2026
12	Validata GroupPartial evidence	London, United Kingdom	51-200	69
	“Validata Group is an international company that empowers banks and financial services with continuous quality engineering, smart ‘progressive’ data migration and enterprise…” Source: company website · checked Sep 2, 2026
13	Quantios Formally MicrogenPartial evidence	London, United Kingdom	201-500	48
	“Founded in 1974 and listed on the London Stock Exchange since 1983, Microgen develops, implements and supports business-critical software.” Source: company website · checked Sep 2, 2026
14	Fairmort LimitedPartial evidence	London, United Kingdom	11-50	36
	“Fairmort is a software product & consultancy company.” Source: company website · checked Sep 2, 2026
15	Almis InternationalPartial evidence	Edinburgh, United Kingdom	11-50	34
	“As market leaders in risk management software solutions, ALMIS International uses proprietary cloud-based IP across a single fully integrated platform to enable global banking…” Source: company website · checked Sep 2, 2026
16	Rebar Systems, LLCPartial evidence	London, United Kingdom	11-50	34
	“Rebar is a thought partner and a technology solutions provider to some of the world’s leading financial institutions.” Source: company website · checked Sep 2, 2026
17	Celer TechnologiesStrong evidence	London, United Kingdom	11-50	34
	“Celer Technologies is a global financial software company that creates modular-based systems that have the flexibility to meet today's dynamic business environment.” Source: company website · checked Sep 2, 2026
18	Avidi TechnologiesIndirect evidence	London, United Kingdom	11-50	33
	“Avidi Technologies is an Innovative English - Ukrainian IT company with headquarters in London, UK, and R&D centers in Ivano-Frankivsk, Kharkiv, and Ternopil, Ukraine; with…” Source: company website · checked Sep 2, 2026
19	Exasoft GroupPartial evidence	Coventry, United Kingdom	11-50	26
	“Exasoft delivers a highly accurate, FCA compliant, calculation engine providing unique and valuable Solutions to the Financial Services Market.” Source: company website · checked Sep 2, 2026
20	Apak Group IS NOW SBSStrong evidence	Bristol, United Kingdom	201-500	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, 2026
21	Whistlebrook LTDStrong evidence	St Ives, United Kingdom	11-50	23
	“Whistlebrook has specialised in providing innovative software solutions for Financial Institutions since 1997.” Source: company website · checked Sep 2, 2026
22	Uptrader Forex CRM & Trading SolutionsPartial evidence	London, United Kingdom	11-50	22
	“UpTrader is a leading fintech software provider, offering cutting-edge solutions tailored to your brokerage business needs.” Source: company website · checked Sep 2, 2026
23	Chronicle SoftwareStrong evidence	London, United Kingdom	11-50	19
	“Founded in 2013 by Java Champion Peter Lawrey, Chronicle Software is on a mission to revolutionise financial technology through proven practices and collaboration.” Source: company website · checked Sep 2, 2026
24	FentexaPartial evidence	London, United Kingdom	11-50	19
	“Fentexa is a technology-driven consultancy, dedicated to the financial markets sector.” Source: company website · checked Sep 2, 2026
25	Whites GroupPartial evidence	West Bridgford, United Kingdom	11-50	12
	“Whites are specialists in providing private and institutional clients access to a range of financial products, designed to minimise risk and maximise profits.” Source: company website · checked Sep 2, 2026

Showing 25 of 215 financial services software developers based in the United Kingdom

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Financial services software developers based in the United Kingdom at a glance

As of Sep 2, 2026

1-10Median size (employees)

LondonLargest hub · 118 HQs

303Contacts with mobile numbers

Sep 2, 2026Data refreshed

Companies by employee count

1-10

109

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

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 services software developers, 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 services software developers”. 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 services software developers, 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, 1,611 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 services software developers by metro

Financial services software developers in London118

Frequently asked

How many financial services software developers are there based in the United Kingdom?

RevenueBase identified 215 financial services software developers 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?

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

Which city has the most financial services software developers?

London leads with 118 headquartered companies, followed by Edinburgh (5) and Manchester (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 1,611 verified decision-maker contacts tracked across these 215 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.