Company lists · Data refreshed September 2026

Top 25 Capital markets software companies based in the United Kingdom

Name: Capital markets software 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 27, 2026 225 companies tracked

RevenueBase identified 225 capital markets software companies headquartered in the United Kingdom as of September 2026 and tracks 11,757 professional contacts across them, including 4,939 with verified work emails. London is the largest hub.

This list covers capital markets software 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 27, 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 27, 2026 86% judged on-target in blind review

225Companies

11,757Contacts tracked

4,939Verified emails

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The 25 largest capital markets software companies based in the United Kingdom

Ranked by team size

Top 25 of 225 capital markets software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to capital markets software 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	ION	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	10001+	3,655 contacts →
	Partial evidence “We’re visionary innovators who are delivering mission-critical trading and workflow automation software to financial institutions, corporations, central banks, and governments.” Source: RevenueBase Database · checked Sep 27, 2026
2	London Stock Exchange	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,631 contacts →
	Partial evidence “The London Stock Exchange is at the heart of where ideas meet capital and become reality.” Source: RevenueBase Database · checked Sep 27, 2026
3	Fidessa	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	480 contacts →
	Indirect evidence “Exceptional trading, investment and information solutions for the world's financial community.” Source: RevenueBase Database · checked Sep 27, 2026
4	PHI Partners	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	281 contacts →
	Strong evidence “Phi Partners is a capital markets consulting firm specialised in quantitative and technology services.” Source: RevenueBase Database · checked Sep 27, 2026
5	Adaptive	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	264 contacts →
	Indirect evidence “Welcome to Adaptive.” Source: RevenueBase Database · checked Sep 27, 2026
6	Genesis Global	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	220 contacts →
	Strong evidence “Genesis Global enables financial markets organizations to innovate at speed through a software application development platform, prepackaged solutions and deep expertise in…” Source: RevenueBase Database · checked Sep 27, 2026
7	Adenza	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	208 contacts →
	Partial evidence “We create and deliver market-leading solutions to help you optimize investment, unlock value and drive growth.” Source: RevenueBase Database · checked Sep 27, 2026
8	Etrading Software	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	193 contacts →
	Strong evidence “Etrading Software (ETS) was founded in 2004 with the goal of bringing efficiency and stability to the burgeoning electronic trading markets.” Source: RevenueBase Database · checked Sep 27, 2026
9	Tradinghub	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	146 contacts →
	Partial evidence “TradingHub provides investment banks, asset managers, hedge funds, commodity houses, and brokerage firms with uniquely intelligent trade surveillance software to protect them…” Source: RevenueBase Database · checked Sep 27, 2026
10	Brady Technologies	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	146 contacts →
	Partial evidence “At Brady Technologies, we are at the forefront of the energy transition, helping market participants navigate new challenges and opportunities with confidence.” Source: RevenueBase Database · checked Sep 27, 2026
11	OSTC	Partial evidence	Bromley, United KingdomHQ checked Sep 27, 2026	201-500	143 contacts →
	Partial evidence “OSTC is a global derivatives trading company creating outstanding performers in financial markets, by developing and supporting their knowledge and experience.” Source: RevenueBase Database · checked Sep 27, 2026
12	NEX	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	97 contacts →
	Indirect evidence “NEX is now part of CME Group.” Source: RevenueBase Database · checked Sep 27, 2026
13	Corfinancial	Partial evidence	London, United KingdomHQ checked Sep 27, 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 27, 2026
14	Neptune North	Strong evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 27, 2026	51-200	77 contacts →
	Strong evidence “At Neptune North we specialise in providing software development and consulting services to businesses operating in the Financial Services and Alternative Investment markets.” Source: RevenueBase Database · checked Sep 27, 2026
15	Eurobase	Partial evidence	Chelmsford, United KingdomHQ checked Sep 27, 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 27, 2026
16	Dunstan Thomas DT	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 27, 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 27, 2026
17	Singletrack	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	70 contacts →
	Partial evidence “Singletrack Sell Side helps banks, brokers and IRPs leverage their research, sales and corporate assets to maximum advantage in an increasingly competitive marketplace.” Source: RevenueBase Database · checked Sep 27, 2026
18	Sernova Financial	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	69 contacts →
	Indirect evidence “Sernova Financial is a UK based entity founded in 2015 by industry experts, Venkatesh Ramasamy and Richard Thompson, in response to the mounting business complexity surrounding…” Source: RevenueBase Database · checked Sep 27, 2026
19	Riskcare	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	67 contacts →
	Indirect 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 27, 2026
20	Marketaxess Post Trade	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	63 contacts →
	Strong evidence “Our MarketAxess Post Trade business (formerly known as Trax) is a leading provider of capital markets data, trade matching and regulatory reporting services to the global…” Source: RevenueBase Database · checked Sep 27, 2026
21	Taskize	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	54 contacts →
	Indirect evidence “Taskize is one of the most influential fintechs in the pre- and post-trade sector of financial services.” Source: RevenueBase Database · checked Sep 27, 2026
22	Meritsoft, A Cognizant Company	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	54 contacts →
	Strong evidence “Meritsoft is the leading innovator in capital markets post-trade process automation.” Source: RevenueBase Database · checked Sep 27, 2026
23	Transficc	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	53 contacts →
	Indirect evidence “Connecting to all global venues and workflows - Automating trading to manage growing volumes and low latency execution - Hosted SaaS providing out of the box DR, security and…” Source: RevenueBase Database · checked Sep 27, 2026
24	Fairmort Limited	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	36 contacts →
	Partial evidence “Fairmort is a software product & consultancy company.” Source: RevenueBase Database · checked Sep 27, 2026
25	Almis International	Strong evidence	Edinburgh, United KingdomHQ checked Sep 27, 2026	11-50	34 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 27, 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: capital markets software 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 capital markets software companies.
Partial evidence: Its own public description names part of capital markets software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name capital markets software 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 225 capital markets software companies based in the United Kingdom

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Capital markets software companies based in the United Kingdom at a glance

As of Sep 27, 2026

42.0%Verified-email coverage

52.3Average contacts per company

11-50Median size (employees)

66.2%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

100

11-50

51-200

201-500

501-1,000

1,001-5,000

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 225 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 capital markets software 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 “capital markets software 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 capital markets software 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 capital markets software 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, 4,939 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 27, 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 capital markets software 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 capital markets software companies are there based in the United Kingdom?

RevenueBase identified 225 capital markets software 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?

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

Which city has the most capital markets software companies?

London leads with 149 headquartered companies, followed by Brighton (3) and Altrincham (2).

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 4,939 verified decision-maker contacts tracked across these 225 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 27, 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.