Company lists · Data refreshed November 2026

Top 21 Outsourcing consultants based in the United Kingdom

Name: Outsourcing consultants based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 3,509 companies tracked

RevenueBase identified 3,509 company matches for outsourcing consultants associated with the United Kingdom as of November 2026 and tracks 31,534 professional contacts across them, including 9,307 with verified work emails. London is the largest hub.

This list covers company matches for outsourcing consultants 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

3,509Companies

31,534Contacts tracked

9,307Verified emails

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The 21 largest outsourcing consultants based in the United Kingdom

Ranked by team size

Top 21 of 3,509 company matches for outsourcing consultants 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	BIG 4 Consultancy Firm	Exact match	Liverpool, United KingdomHQ recorded Nov 6, 2026	n/a	405 contacts →
	Exact match “This is a page for all contractors and consultants to join, where you are unable to disclose client relationship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Hirexa Solutions	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	386 contacts →
	Exact match “Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	GI Outsourcing	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	327 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
4	Clarify	Exact match	Theale, United KingdomHQ recorded Nov 6, 2026	51-200	181 contacts →
	Exact match “Clarify helps global Technology companies achieve sustained and significant commercial success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	The DOT HQ	Exact match	Milton Keynes, United KingdomHQ recorded Nov 6, 2026	51-200	170 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
6	Target HR	Exact match	Billingshurst, United KingdomHQ recorded Nov 6, 2026	n/a	163 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
7	Potentiam LTD	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	154 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
8	Prokura	Exact match	Copenhagen K, United KingdomHQ recorded Nov 6, 2026	51-200	130 contacts →
	Exact match “Prokura, a Kearney company, is an entrepreneurial consulting company specializing in Procurement and Supply Chain.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Opticoreit	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	128 contacts →
	Exact match “OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Athens	Exact match	London, United KingdomHQ recorded Nov 6, 2026	11-50	123 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
11	Quorum	Exact match	Edinburgh, United KingdomHQ recorded Nov 6, 2026	51-200	117 contacts →
	Exact match “We are an IT Consultancy and Managed Services company in Edinburgh with offices in London, Founded by Charles Scott, and Andrew Watson in We have successful Enterprise Consulting…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Humanhire Corp	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	117 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
13	Solvex Solutions	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	105 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
14	PHMC	Exact match	Buxton, United KingdomHQ recorded Nov 6, 2026	n/a	101 contacts →
	Exact match “Freelance management consultancy, support business owners and their management teams.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Ramsac	Exact match	Guildford, United KingdomHQ recorded Nov 6, 2026	51-200	100 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
16	Resource Solutions	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	96 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
17	OVYO	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	92 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
18	MAP Room	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	88 contacts →
	Exact match “Follow us for the latest career opportunities, market analysis and insight.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Whitetree	Exact match	Bristol, United KingdomHQ recorded Nov 6, 2026	51-200	87 contacts →
	Exact match “Whitetree is an agile consulting firm that provides strategic guidance and operational support to large businesses and government departments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Invedus Outsourcing	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	87 contacts →
	Exact match “Invedus Outsourcing is a remote employees outsourcing company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Tellida Private Limited	Exact match	Colombo, United KingdomHQ recorded Nov 6, 2026	51-200	86 contacts →
	Exact match “Tellida (Pvt) Ltd is a global outsourcing company providing Legal Process Outsourcing (LPO), Finance & Accounting Outsourcing (FAO), Contact Centre services, and Remote Business…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “outsourcing consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 21 of 3,509 outsourcing consultants based in the United Kingdom

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Outsourcing consultants based in the United Kingdom at a glance

As of Nov 6, 2026

29.5%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

34.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,595

11-50

635

51-200

169

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 3,509 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 consultants” 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 9,307 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.

Outsourcing consultants by metro

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 consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 3,509 company matches for outsourcing consultants 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?

BIG 4 Consultancy Firm tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outsourcing consultants?

London leads with 1199 company records, followed by Manchester (108) and Bristol (46).

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 9,307 professional contacts with verified work emails tracked across these 3,509 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.