Company lists · Data refreshed September 2026

Top 25 Exchange software development companies based in London, United Kingdom

Name: Exchange software development companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 12, 2026 111 companies tracked

RevenueBase identified 111 exchange software development companies headquartered in London, United Kingdom as of September 2026 and tracks 6,942 professional contacts across them, including 3,452 with verified work emails and 893 with mobile numbers. London is the largest hub.

This list covers exchange software development companies 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 12, 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 12, 2026 86% judged on-target in blind review

111Companies

6,942Contacts tracked

3,452Verified emails

893Mobile numbers

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The 25 largest exchange software development companies based in London, United Kingdom

Ranked by team size

Top 25 of 111 exchange software development companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to exchange software development 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 12, 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 12, 2026
2	Options Technology	Indirect evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
3	Fidessa	Indirect evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
4	Genesis Global	Strong evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
5	Magora	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	213 contacts →
	Strong evidence “Magora is an international software development company with 12 years of extensive experience in bespoke development outsourcing market.” Source: RevenueBase Database · checked Sep 12, 2026
6	Adenza	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1,001-5,000	208 contacts →
	Indirect evidence “We create and deliver market-leading solutions to help you optimize investment, unlock value and drive growth.” Source: RevenueBase Database · checked Sep 12, 2026
7	Etrading Software	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	193 contacts →
	Partial 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 12, 2026
8	Singletrack	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	70 contacts →
	Indirect 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 12, 2026
9	Agile Cyber Solutions	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	69 contacts →
	Strong evidence “Agile Cyber Solutions is a company providing software services which prides itself as an understanding IT partner for various product development companies, large portals…” Source: RevenueBase Database · checked Sep 12, 2026
10	Caplin Systems	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	68 contacts →
	Indirect evidence “Caplin delivers cutting-edge trading technology, empowering financial institutions with high-performance, multi-asset platforms for FX, crypto, fixed income, and more.” Source: RevenueBase Database · checked Sep 12, 2026
11	Transficc	Indirect evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
12	Rapid Addition	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	42 contacts →
	Indirect evidence “Rapid Addition is helping financial institutions take advantage of the new world of electronic trading and giving them the flexibility to quickly adapt as markets continue to…” Source: RevenueBase Database · checked Sep 12, 2026
13	Fairmort Limited	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	36 contacts →
	Partial evidence “Fairmort is a software product & consultancy company.” Source: RevenueBase Database · checked Sep 12, 2026
14	Netdania	Indirect evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
15	Avidi Technologies	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	33 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 12, 2026
16	Fixnetix LTD	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	33 contacts →
	Indirect evidence “Fixnetix provides market data, trading access, liquidity venue connectivity, pre-trade risk and execution management technologies for Investment Banks, Hedge Funds and Proprietary…” Source: RevenueBase Database · checked Sep 12, 2026
17	Mahimarkets	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	31 contacts →
	Indirect evidence “Combining extensive trading knowledge and robust engineering, we’ve been crafting solutions for banks and brokers since 2010; helping our customers to drive PnL and deliver low…” Source: RevenueBase Database · checked Sep 12, 2026
18	Celer Technologies	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	30 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 12, 2026
19	Gmex Group	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	23 contacts →
	Indirect evidence “is a set of companies offering sustainable and innovative solutions for a new era of global financial markets.” Source: RevenueBase Database · checked Sep 12, 2026
20	Exberry	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	21 contacts →
	Partial evidence “Exberry is an independent technology vendor specialising in cutting-edge trading technologies for exchanges.” Source: RevenueBase Database · checked Sep 12, 2026
21	Chronicle Software	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	19 contacts →
	Partial 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 12, 2026
22	Fentexa	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	19 contacts →
	Indirect evidence “Fentexa is a technology-driven consultancy, dedicated to the financial markets sector.” Source: RevenueBase Database · checked Sep 12, 2026
23	Avenir Technology LTD ATL	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	16 contacts →
	Indirect evidence “Avenir Technology builds the infrastructure behind tomorrow’s markets.” Source: RevenueBase Database · checked Sep 12, 2026
24	Arctic Lake	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	11 contacts →
	Indirect evidence “We understand that one-size-fits-all trading platforms can't deliver every feature you need to grow your business.” Source: RevenueBase Database · checked Sep 12, 2026
25	Inforalgo	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	7 contacts →
	Indirect evidence “Inforalgo is a UK-headquartered fintech company with 30 years’ rich experience in providing smart data management solutions and services to capital markets clients globally.” Source: RevenueBase Database · checked Sep 12, 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: exchange software development 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 exchange software development companies.
Partial evidence: Its own public description names part of exchange software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name exchange software development 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 111 exchange software development companies based in London, United Kingdom

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Exchange software development companies based in London, United Kingdom at a glance

As of Sep 12, 2026

49.7%Verified-email coverage

12.9%Mobile-number coverage

62.5Average contacts per company

11-50Median size (employees)

103.6%Largest-city concentration · London

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

2,8360–30

51731–60

1561–90

090–180

84180+

Company record updated

Median 63.0d

00–30

3,13031–60

2,85761–90

59190–180

364180+

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 exchange software development 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 London, United Kingdom whose own description of what they do matches “exchange software development 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 exchange software development 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 exchange software development companies, 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, 3,452 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 12, 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.

Exchange software development companies by metro in the United Kingdom

Exchange software development companies in London115

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 exchange software development 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 exchange software development companies are there based in London, United Kingdom?

RevenueBase identified 111 exchange software development companies 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?

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

Which city has the most exchange software development companies?

London leads with 115 headquartered companies, followed by Harrow (3) and Manchester (3).

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 3,452 verified decision-maker contacts tracked across these 111 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 12, 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.