Company lists · Data refreshed September 2026

Top 25 Financial services IT companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,038 companies tracked

RevenueBase identified 1,038 financial services IT companies headquartered in the United Kingdom as of September 2026 and tracks 19,217 professional contacts across them, including 6,882 with verified work emails. London is the largest hub.

This list covers financial services IT 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

1,038Companies

19,217Contacts tracked

6,882Verified emails

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The 25 largest financial services IT companies based in the United Kingdom

Ranked by team size

Top 25 of 1,038 financial services IT companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to financial services IT companies: 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	Finastra	Partial evidence	Paddington, United KingdomHQ checked Sep 21, 2026	5,001-10,000	6,779 contacts →
	Partial evidence “We’re partnering with financial institutions to deliver reliable and secure mission-critical financial services software shaped by their needs and driven by innovation.” Source: RevenueBase Database · checked Sep 21, 2026
2	First Derivative	Indirect evidence	Newry, United KingdomHQ checked Sep 21, 2026	1,001-5,000	988 contacts →
	Indirect evidence “First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward.” Source: RevenueBase Database · checked Sep 21, 2026
3	Alpha Group	Partial evidence	Paddington, United KingdomHQ checked Sep 21, 2026	501-1,000	805 contacts →
	Partial evidence “We are Alpha – a leading global provider of financial solutions, empowering some of the world’s most respected organisations.” Source: RevenueBase Database · checked Sep 21, 2026
4	MTI	Indirect evidence	Staines-upon-thames, United KingdomHQ checked Sep 21, 2026	201-500	764 contacts →
	Indirect evidence “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Source: RevenueBase Database · checked Sep 21, 2026
5	Options Technology	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	549 contacts →
	Partial evidence “Options Technology (Options) is a financial technology company at the forefront of banking and trading infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026
6	Purview	Partial evidence	Edinburgh, United KingdomHQ checked Sep 21, 2026	1,001-5,000	323 contacts →
	Partial evidence “Purview is a premier provider of IT Engineering and Talent Solutions to mid-market and Fortune 500 companies globally.” Source: RevenueBase Database · checked Sep 21, 2026
7	Flat Rock Technology	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	231 contacts →
	Indirect evidence “Since 2008, Flat Rock Technology, a software engineering, SI, Cloud DevOps, Cyber Security, and Customer Experience (CX) company, has been at the forefront of providing innovative…” Source: RevenueBase Database · checked Sep 21, 2026
8	ICS Financial Systems - Icsfs	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	200 contacts →
	Partial evidence “ICSFS is a global financial and banking software solutions provider, that has been servicing the financial and banking industry for many decades through its multi-award-winning…” Source: RevenueBase Database · checked Sep 21, 2026
9	Neptune Software Group	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	158 contacts →
	Indirect evidence “Traditionally, core banking solutions revolved around products rather than customer needs.” Source: RevenueBase Database · checked Sep 21, 2026
10	Instil	Indirect evidence	Belfast, United KingdomHQ checked Sep 21, 2026	51-200	123 contacts →
	Indirect evidence “At Instil, we help technology brands transform, innovate and disrupt their markets with secure, category-defining software.” Source: RevenueBase Database · checked Sep 21, 2026
11	Conosco	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	105 contacts →
	Indirect evidence “Cybersecurity specialists providing technology and telecoms solutions that gives you the leadership, experience and resilience you need to build and secure the future of work.” Source: RevenueBase Database · checked Sep 21, 2026
12	Celerity Limited	Indirect evidence	Manchester, United KingdomHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “We create secure digital worlds for our customers, so you can look ahead with absolute confidence - helping you to to make a real, positive impact on the world.” Source: RevenueBase Database · checked Sep 21, 2026
13	Ikigai Digital	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	100 contacts →
	Indirect evidence “We are a team of senior technologists who have collectively delivered many digital banks and know how to help execute your strategy.” Source: RevenueBase Database · checked Sep 21, 2026
14	Matsco Solutions	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	96 contacts →
	Strong evidence “Matsco Solutions is a global managed IT service provider built exclusively for the financial services industry.” Source: RevenueBase Database · checked Sep 21, 2026
15	Corfinancial	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	88 contacts →
	Partial evidence “Corfinancial provides software and advice to the financial services sector around the world.” Source: RevenueBase Database · checked Sep 21, 2026
16	Pinion Services	Indirect evidence	Wakefield, United KingdomHQ checked Sep 21, 2026	51-200	86 contacts →
	Indirect evidence “Pinion is a professional services firm focused primarily on payment-solutions technologies and information management.” Source: RevenueBase Database · checked Sep 21, 2026
17	Symplore	Indirect evidence	Hounslow, United KingdomHQ checked Sep 21, 2026	51-200	82 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
18	Baseel Partners	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	78 contacts →
	Partial evidence “We offer a broad portfolio of IT and consulting services covering Governance and Strategy, Cloud, Data, Cybersecurity, Infrastructure and Applications, Managed IT and Security.” Source: RevenueBase Database · checked Sep 21, 2026
19	Eurobase	Partial evidence	Chelmsford, United KingdomHQ checked Sep 21, 2026	51-200	75 contacts →
	Partial evidence “Eurobase is an international software and service provider to financial institutions in over 25 countries.” Source: RevenueBase Database · checked Sep 21, 2026
20	Page Solutions	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	75 contacts →
	Indirect evidence “Page Solution is a technology services & consulting company with a hyper-focus on banking technology and transformation.” Source: RevenueBase Database · checked Sep 21, 2026
21	BIT Wave Solutions Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 21, 2026	11-50	75 contacts →
	Indirect evidence “Headquartered at Reading, Berkshire in United Kingdom, Bit Wave Solutions enables global businesses to build their future by directing clients’ innovation & customization agenda.” Source: RevenueBase Database · checked Sep 21, 2026
22	Dunstan Thomas DT	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 21, 2026	51-200	70 contacts →
	Indirect evidence “Dunstan Thomas (DT) are a leading UK WealthTech partner, having spent over 30 years at the heart of WealthTech innovation.” Source: RevenueBase Database · checked Sep 21, 2026
23	Caspian ONE	Partial evidence	Bournemouth, United KingdomHQ checked Sep 21, 2026	201-500	69 contacts →
	Partial evidence “Caspian One is a professional services provider operating exclusively within financial services.” Source: RevenueBase Database · checked Sep 21, 2026
24	Validata Group	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	68 contacts →
	Partial evidence “Validata Group is an international company that empowers banks and financial services with continuous quality engineering, smart ‘progressive’ data migration and enterprise…” Source: RevenueBase Database · checked Sep 21, 2026
25	Riskcare	Partial evidence	London, United KingdomHQ checked Sep 21, 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 21, 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: financial services IT companies. 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 financial services IT companies.
Partial evidence: Its own public description names part of financial services IT companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name financial services IT companies. 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 1,038 financial services IT companies based in the United Kingdom

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Financial services IT companies based in the United Kingdom at a glance

As of Sep 21, 2026

35.8%Verified-email coverage

18.5Average contacts per company

1-10Median size (employees)

37.9%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

666

11-50

250

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,038 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 financial services IT companies, 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 the United Kingdom whose own description of what they do matches “financial services IT companies”. 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 financial services IT companies), 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 financial services IT 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 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, 6,882 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 21, 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 IT companies by metro

Financial services IT companies in London393

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 financial services IT companies, 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 financial services IT companies are there based in the United Kingdom?

RevenueBase identified 1,038 financial services IT 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?

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

Which city has the most financial services IT companies?

London leads with 393 headquartered companies, followed by Manchester (21) and Birmingham (14).

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 6,882 verified decision-maker contacts tracked across these 1,038 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 21, 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.