Company lists · Data refreshed September 2026
Top 25 Financial services consulting firms based in the United Kingdom
RevenueBase identified 2,136 financial services consulting firms headquartered in the United Kingdom as of September 2026 and tracks 27,833 professional contacts across them, including 8,896 with verified work emails and 4,313 with mobile numbers. London is the largest hub.
This list covers financial services consulting firms 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.
The 25 largest financial services consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,352 | ||||
“We are a leading UK professional services consultancy at the forefront of risk, pensions, investment and insurance.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,022 | ||||
“First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 334 | ||||
“At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | 302 | ||||
“At FinSurge, we are at the forefront of transforming the global financial landscape.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 271 | ||||
“We are 4most: the go-to analytics consultancy for financial institutions who want to make better, data-driven decisions with confidence.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 255 | ||||
“Datos Insights is the leading research and advisory partner to the banking, insurance, securities, and payments technology industries-both the financial services firms and the…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 236 | ||||
“Albany Beck is a client-first consulting firm helping financial services organisations deliver complex change and build capability, not dependency.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 219 | ||||
“MarshBerry – Helping Clients Learn, Improve & Realize Value MarshBerry is a global leader in investment banking and consulting dedicated to helping insurance brokerages, and firms…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 205 | ||||
“Welcome to the Protiviti perspective.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 123 | ||||
“Specialists in change and transformation across asset, wealth and insurance.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 123 | ||||
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | Square 4 PartnersPartial evidence | 118 | |||
“We help protect regulated firms across an evolving spectrum of conduct, financial crime and operational risk.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 98 | ||||
“Fenchurch Advisory Partners is one of the leading independent corporate finance advisory firms in London.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 93 | ||||
“Valentia Partners is a specialist Management Consulting firm.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | PMC TreasuryIndirect evidence | 92 | |||
“An independent specialist treasury and risk management consultancy offering expert advice and practical support to corporates, private equity and infrastructure funds globally.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | 85 | ||||
“Amber River True Bearing.the new name for True Bearing Chartered Financial Planners” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 82 | ||||
“We are a management consultancy based in London; working with our clients (predominantly global banks, payment providers and other financial institutions) to shape their future…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 79 | ||||
“We are a partner for Banks and Financial Institutions - making your trade, treasury, risk and assurance functions smarter and more efficient.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | 74 | ||||
“Thistle Initiatives is an award‑winning management consultancy specialising in regulatory compliance, financial crime and business transformation.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | 73 | ||||
“Punter Southall is a group of companies with one aim – helping businesses and people make better decisions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | 69 | ||||
“fscom is one of the premier specialist consulting firms providing governance, risk, and compliance solutions to financial services institutions in the UK and Ireland.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 68 | ||||
“Waystone is a leading asset-servicing solutions provider of institutional governance, administration, risk and compliance services to financial institutions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | 68 | ||||
“In complex transformation programmes, risk, regulation, financial crime, data, technology and operations no longer sit in separate silos.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | CamelotIndirect evidence | 64 | |||
“We are a network of independent consultants who are ex-C-Suite Execs/Senior Managers who have all been there and done it in top organisations, mainly in insurance but others as…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 | ||||
“For over 20 years, Celent has helped senior executives make confident decisions around their technology strategies to execute at scale.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 2,136 financial services consulting firms based in the United Kingdom
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Financial services consulting firms based in the United Kingdom at a glance
As of Sep 2, 2026Companies by employee count
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 consulting firms, 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 consulting firms”. 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 consulting firms, 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, 8,896 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 consulting firms by metro
- Financial services consulting firms in London888
- Financial services consulting firms in Manchester41
Frequently asked
How many financial services consulting firms are there based in the United Kingdom?
RevenueBase identified 2,136 financial services consulting firms 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?
Barnett Waddingham, headquartered in Guildford, tops this list with the largest team on record.
Which city has the most financial services consulting firms?
London leads with 888 headquartered companies, followed by Manchester (41) and Edinburgh (23).
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 8,896 verified decision-maker contacts tracked across these 2,136 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.
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