Company lists · Data refreshed November 2026

Top 21 Outsourcing advisors based in the United Kingdom

RevenueBase identified 4,473 company matches for outsourcing advisors associated with the United Kingdom as of November 2026 and tracks 55,052 professional contacts across them, including 12,311 with verified work emails. London is the largest hub.

This list covers company matches for outsourcing advisors 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 November 6, 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 Nov 6, 2026 How this list was built
4,473Companies
55,052Contacts tracked
12,311Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 21 largest outsourcing advisors based in the United Kingdom

Ranked by team size
Top 21 of 4,473 company matches for outsourcing advisors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 202610001+22,725 contacts →

Exact match

“Capita is an AI-enabled business services partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,149 contacts →

Exact match

“Interpath supports businesses, their investors and stakeholders across a broad range of specialisms spanning restructuring, deals, strategy & value creation and forensic…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500327 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200231 contacts →

Exact match

“Established in 2005 by Rethink Group, we deliver recruitment strategies for the curious: those who want to surpass their competition by attracting, engaging and hiring the best…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 202651-200170 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200167 contacts →

Exact match

“Winners of the UKOUG Business Transformation Advisory Partner of the Year Award 2025 Veran Performance is an advisory consultancy specialising in HR, Payroll, Procurement and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBillingshurst, United KingdomHQ recorded Nov 6, 2026n/a163 contacts →

Exact match

“Target HR is a team of HR consultants and trainers providing outsourced Human Resources consultancy plus classroom and online training, to small and medium-sized businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500154 contacts →

Exact match

“At Potentiam, we help businesses unlock growth by building nearshore and offshore teams that empower organisations to scale faster, operate smarter and stay ahead of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200150 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSydney, United KingdomHQ recorded Nov 6, 2026n/a132 contacts →

Exact match

“EATON provides strategic advisory and search services to law firms and corporates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDuxford, United KingdomHQ recorded Nov 6, 202651-200127 contacts →

Exact match

“Better people, better business, better life.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchOff The Strand, United KingdomHQ recorded Nov 6, 202651-200123 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-50123 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200117 contacts →

Exact match

“HumanHire Corp established in 2014 focuses to provide the most reliable and relevant resources based on client needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500105 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGuildford, United KingdomHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“ramsac provide so much more than just IT support.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000100 contacts →

Exact match

“Paperchase Business Services Ltd (PBSL) is a firm of accountants, taxation and business advisors based in South London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHemel Hempstead, United KingdomHQ recorded Nov 6, 202611-50100 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,00096 contacts →

Exact match

“Resource Solutions is a leading provider of recruitment and consultancy solutions, managing a recruitment budget of over £2 billion on behalf of our clients since 1997, as part of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“Ovyo provides rapid access to specialist people and teams in software engineering, operations & delivery throughout the streaming/OTT/media, satellite/space and comms industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5089 contacts →

Exact match

“Reticula is an expert network firm dedicated to enhancing global business decision-making.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 21 of 4,473 outsourcing advisors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 12,311 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourcing advisors based in the United Kingdom at a glance

As of Nov 6, 2026
22.4%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
38.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,340
11-50
769
51-200
196
201-500
35
501-1,000
15
1,001-5,000
13
5,001-10,000
5
10001+
4

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 4,473 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 advisors” 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 12,311 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 November 6, 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 advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing advisors are there based in the United Kingdom?

RevenueBase identified 4,473 company matches for outsourcing advisors associated with the United Kingdom as of November 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?

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

Which city has the most outsourcing advisors?

London leads with 1723 company records, followed by Manchester (117) and Leeds (57).

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 12,311 professional contacts with verified work emails tracked across these 4,473 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 November 6, 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.