Company lists · Data refreshed September 2026

Top 25 Payment systems consulting firms based in London, United Kingdom

Name: Payment systems consulting firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 112 companies tracked

RevenueBase identified 112 payment systems consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 1,413 professional contacts across them, including 605 with verified work emails and 70 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers payment systems consulting firms 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 13, 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 13, 2026 86% judged on-target in blind review

112Companies

1,413Contacts tracked

605Verified emails

70Mobile numbers

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The 25 largest payment systems consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 112 payment systems consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to payment systems consulting firms: 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	Trust Payments	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	441 contacts →
	Partial evidence “Our mission is to help businesses to optimise their sales and customer experience through facilitating speedy and seamless payments, loyalty, and data management creating truly…” Source: RevenueBase Database · checked Sep 13, 2026
2	Financial House	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	77 contacts →
	Indirect evidence “Financial House, a trusted provider of financial services, offers merchant acquiring and card-issuing solutions.” Source: RevenueBase Database · checked Sep 13, 2026
3	ML	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	77 contacts →
	Partial evidence “Established in 2007, ML has developed deep roots within the payments and banking industry.” Source: RevenueBase Database · checked Sep 13, 2026
4	Payadmit	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Partial evidence “Payadmit is a cutting-edge payment software provider created by a team of industry professionals with 10+ years of hands-on experience in the payment industry.” Source: RevenueBase Database · checked Sep 13, 2026
5	Traderoot International	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	24 contacts →
	Partial evidence “Traderoot is a strategic financial software development company that provides advanced global, PCI PA DSS certified and validated payments solutions which leverage the latest…” Source: RevenueBase Database · checked Sep 13, 2026
6	Ubank Connect	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	20 contacts →
	Indirect evidence “Reach emerging markets in the easiest way possible and start boosting your business with UBank Connect.” Source: RevenueBase Database · checked Sep 13, 2026
7	Payx Group	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	19 contacts →
	Partial evidence “PayX is a well known specialist global Payments Market Analyst, Consultancy & Nextgen (FinTech) portfolio firm.” Source: RevenueBase Database · checked Sep 13, 2026
8	PSE Consulting	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	17 contacts →
	Strong evidence “PSE Consulting – PSE (Payment Systems Europe Limited), based in London, UK, was formed in 1991 as a specialist business and technology payment systems consulting company.” Source: RevenueBase Database · checked Sep 13, 2026
9	Finstack Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	15 contacts →
	Partial evidence “An advanced Fintech Organization with experienced and expertise employees in payments, high risk acquiring, crypto acquiring domain.” Source: RevenueBase Database · checked Sep 13, 2026
10	European Merchant Services EMS UK	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	12 contacts →
	Indirect evidence “EMS assists Global merchants to trade cross border within Europe.” Source: RevenueBase Database · checked Sep 13, 2026
11	Accourt Payments Specialists, An SRM Company	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “Accourt is a leading provider of strategic and operational consultancy services to the payments industry worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
12	Centpays	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “Let’s be honest, in payments, promises are everywhere, but delivery isn’t.” Source: RevenueBase Database · checked Sep 13, 2026
13	Logibiz Technologies PVT LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “Logibiz Technologies is a technology company headquartered in the United Kingdom focusing to offer tailored payment solutions & services for online transactions worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
14	Locked Stack	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Indirect evidence “Locked Stack is an independent cybersecurity consultancy and managed services firm headquartered in London, with a US subsidiary, operating across North America, Europe, and the…” Source: RevenueBase Database · checked Sep 13, 2026
15	Neopay	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Partial evidence “Neopay leads the market in delivering compliance solutions to electronic money issuers and payment institutions.” Source: RevenueBase Database · checked Sep 13, 2026
16	Paymentwise Merchant Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Partial evidence “PAYMENTWISE MERCHANT SOLUTIONS LIMITED is a Payment Processing Service-based company of UNIT 310 EAST LONDON WORKS 65 WHITECHAPEL ROAD, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 13, 2026
17	Pinnacle Payment Economics	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “Pinnacle Payment Economics is a specialist payment economics analytics company providing SaaS tools and related services to card issuers, acquirers, BIN Sponsors and PayFacs…” Source: RevenueBase Database · checked Sep 13, 2026
18	Wisesystems Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “Wisesystems is a UK based consulting firm, provider of technical and business expertise focused on the financial services industry.” Source: RevenueBase Database · checked Sep 13, 2026
19	Paypr.Work Peɪpəwə K	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Indirect evidence “Well, you may be surprised to know that we did not start as Marketers.” Source: RevenueBase Database · checked Sep 13, 2026
20	NTH Exception	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	4 contacts →
	Strong evidence “We are a boutique payments technology and consulting firm, we specializing in ISO 20022.” Source: RevenueBase Database · checked Sep 13, 2026
21	Amma Payment Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Partial evidence “Amma Payment Solutions: Spearheading Payment Innovation with Distinguished Partnerships At Amma Payment Solutions, we take pride in being a frontrunner in the payment solutions…” Source: RevenueBase Database · checked Sep 13, 2026
22	Payments Company	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Partial evidence “Supporting payments enabling you to focus on building your business We provide solutions up to and including an outsourced payments team Payments Company recognises the three main…” Source: RevenueBase Database · checked Sep 13, 2026
23	Insight Consultancy Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	3 contacts →
	Partial evidence “Insight Consultancy provides specialist diagnostic and advisory services to the payment cards industry on a worldwide basis.” Source: RevenueBase Database · checked Sep 13, 2026
24	Payvector	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	3 contacts →
	Indirect evidence “Simple.” Source: RevenueBase Database · checked Sep 13, 2026
25	E-Venture Business Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Partial evidence “Driving Success in the Digital and Global Arena: E-Venture Business Solutions brings together expert-led services in Cybersecurity Governance, Digital Payment Solutions, and…” Source: RevenueBase Database · checked Sep 13, 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: payment systems consulting firms. 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 payment systems consulting firms.
Partial evidence: Its own public description names part of payment systems consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name payment systems consulting firms. 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 112 payment systems consulting firms based in London, United Kingdom

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Payment systems consulting firms based in London, United Kingdom at a glance

As of Sep 13, 2026

42.8%Verified-email coverage

5.0%Mobile-number coverage

12.6Average contacts per company

11-50Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Freshness & accuracy

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

Email last verified

Median 15.0d

4790–30

12231–60

361–90

090–180

1180+

Company record updated

Median 65.0d

00–30

57131–60

54761–90

19190–180

104180+

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 payment systems consulting firms, 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 “payment systems consulting firms”. 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 payment systems consulting firms), 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 payment systems consulting firms, 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, 605 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 13, 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 payment systems consulting firms, 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 payment systems consulting firms are there based in London, United Kingdom?

RevenueBase identified 112 payment systems consulting firms 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?

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

Which city in the United Kingdom has the most payment systems consulting firms?

London leads the United Kingdom with 121 headquartered companies, followed by Birmingham (6) and Milton Keynes (5).

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 605 verified decision-maker contacts tracked across these 112 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 13, 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.