Company lists · Data refreshed September 2026

Top 25 Outsourcing advisory firms based in the United Kingdom

RevenueBase identified 2,064 company matches for outsourcing advisory firms associated with the United Kingdom as of September 2026 and tracks 14,143 professional contacts across them, including 4,123 with verified work emails. London is the largest hub.

This list covers company matches for outsourcing advisory firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
2,064Companies
14,143Contacts tracked
4,123Verified emails
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The 25 largest outsourcing advisory firms based in the United Kingdom

Ranked by team size
Top 25 of 2,064 company matches for outsourcing advisory firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000731 contacts →

Exact match

“FRP is a leading national business advisory firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000333 contacts →

Exact match

“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000322 contacts →

Exact match

“At SKS, we pride ourselves on being different.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500311 contacts →

Exact match

“GI Outsourcing is a UK-based accountants outsourcing firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500277 contacts →

Exact match

“Quantuma is a leading business advisory firm which works with businesses at the key milestones.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchMilton Keynes, United KingdomHQ recorded Sep 21, 202651-200146 contacts →

Exact match

“At The Dot HQ, we empower businesses with a full spectrum of offshore resource solutions, ensuring efficiency, compliance and growth.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200144 contacts →

Exact match

“Opus Business Advisory Group is an independent advisory firm that assists clients to achieve their objectives, enhance value and attain the best possible results.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-50122 contacts →

Exact match

“Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500103 contacts →

Exact match

“we redefine business process outsourcing, empowering companies to broaden their horizons.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchOff The Strand, United KingdomHQ recorded Sep 21, 202651-200102 contacts →

Exact match

“DRAX helps investors and high growth companies unlock peak performance through our deep expertise in Leadership Advisory, Deal Advisor Sourcing and Executive Search.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchManchester, United KingdomHQ recorded Sep 21, 2026501-1,00097 contacts →

Exact match

“K3 Capital Group is a professional services firm providing advisory services to SMEs throughout the UK and overseas.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchHemel Hempstead, United KingdomHQ recorded Sep 21, 202611-5094 contacts →

Exact match

“Running your own business can be overwhelming, but with SSG's market-leading support services, you can focus on what really matters – your clients and billing!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20086 contacts →

Exact match

“As a leading Professional Services firm, we offer five interrelated Talent Acquisition & Advisory Services to help Boards with the challenges they face.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchWelwyn Garden City, United KingdomHQ recorded Sep 21, 202651-20080 contacts →

Exact match

“Purchase Direct provides outsourced purchasing services to businesses requiring long term management and control of their overhead purchasing.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5079 contacts →

Exact match

“We are SI Global.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20075 contacts →

Exact match

“We redefined management consulting to make it better for clients and better for consultants.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20073 contacts →

Exact match

“Erevena is the global executive search advisor to the world's most ambitious tech companies.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,00071 contacts →

Exact match

“Eight Advisory is an independent advisory firm specialising in transactions, restructuring and transformation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchBirmingham, United KingdomHQ recorded Sep 21, 2026n/a71 contacts →

Exact match

“Sharma & Co operates from offices in Birmingham, London and Manchester delivering practical and cost effective advice.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20066 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCranfield, United KingdomHQ recorded Sep 21, 202611-5064 contacts →

Exact match

“At MPA, we exist to help business owners navigate the complex journey of scaling and exiting their businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20062 contacts →

Exact match

“Fusion is a multi-disciplinary consulting firm that offers 360 degree advisory services and end-to-end solutions for private individuals and fast growth businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5059 contacts →

Exact match

“Collingwood is the only growth, value creation, and M&A advisory that is purpose-built to help information, media, and events businesses create and realise shareholder value.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchEdinburgh, United KingdomHQ recorded Sep 21, 202611-5058 contacts →

Exact match

“Headquartered in Edinburgh, FWB is one of the UK’s leading boutique Executive Search & Board Advisory businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20049 contacts →

Exact match

“IGNITION LAW ARE ADVISORS AND PARTNERS FOR YOUR JOURNEY OF GROWTH Maybe you’re a start-up navigating the maze of complications to get your business up and running, a scale-up…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 2,064 outsourcing advisory firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,123 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourcing advisory firms based in the United Kingdom at a glance

As of Sep 21, 2026
29.2%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
42.6%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
1,614
11-50
334
51-200
72
201-500
11
501-1,000
9
1,001-5,000
3
5,001-10,000
1
10001+
1

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 2,064 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “outsourcing advisory firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,123 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “outsourcing advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing advisory firms are there based in the United Kingdom?

RevenueBase identified 2,064 company matches for outsourcing advisory firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

FRP Advisory tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outsourcing advisory firms?

London leads with 880 company records, followed by Manchester (40) and Bristol (27).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,123 professional contacts with verified work emails tracked across these 2,064 companies; direct dials are available where recorded.

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.

Ready to reach these companies? Verified emails and direct dials for all 2,064 outsourcing advisory firms based in the United Kingdom. Start with a free account, no credit card.

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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.