Company lists · Data refreshed September 2026

Top 25 Deal management consulting firms based in the United Kingdom

Name: Deal management consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,805 companies tracked

RevenueBase identified 1,805 company matches for deal management consulting firms associated with the United Kingdom as of September 2026 and tracks 31,383 professional contacts across them, including 12,492 with verified work emails. London is the largest hub.

This list covers company matches for deal management consulting 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 28, 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 28, 2026 How this list was built

1,805Companies

31,383Contacts tracked

12,492Verified emails

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The 25 largest deal management consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 1,805 company matches for deal management consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Ey-Parthenon	Exact match	London, United KingdomHQ recorded Sep 28, 2026	10001+	17,070 contacts →
	Exact match “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	1,011 contacts →
	Exact match “At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	The GAP Partnership	Exact match	Berkhamsted, United KingdomHQ recorded Sep 28, 2026	201-500	359 contacts →
	Exact match “We are a global management consultancy specialising in negotiation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Quantuma	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	277 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 28, 2026 · View company records in RevenueBase
5	Elixirr	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	275 contacts →
	Exact match “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Moorhouse B Corp Certified	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	247 contacts →
	Exact match “We’re a dynamic consulting firm, focused on delivering change.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Sysdoc	Exact match	London (uk), United KingdomHQ recorded Sep 28, 2026	51-200	142 contacts →
	Exact match “At Sysdoc we exist to help our clients to transform, adapt and operate in order for them to achieve their ambitions, and to provide our own people with opportunities that allow…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Athens	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	122 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 28, 2026 · View company records in RevenueBase
9	Oaklin	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	115 contacts →
	Exact match “Oaklin is an independent management consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Valentia Partners	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	94 contacts →
	Exact match “Valentia Partners is a specialist Management Consulting firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Elevate	Exact match	Bristol, United KingdomHQ recorded Sep 28, 2026	51-200	83 contacts →
	Exact match “At ELEVATE, we execute complex B2B go-to-market strategies with precision at every revenue-critical juncture, managing leads, building executive access, winning deals, expanding…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	SI Global	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	79 contacts →
	Exact match “We are SI Global.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Eden Mccallum	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	75 contacts →
	Exact match “We redefined management consulting to make it better for clients and better for consultants.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Change Management Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	74 contacts →
	Exact match “Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Excalibur Communications	Exact match	Swindon, United KingdomHQ recorded Sep 28, 2026	51-200	72 contacts →
	Exact match “Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Eight Advisory UK	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	71 contacts →
	Exact match “Eight Advisory is an independent advisory firm specialising in transactions, restructuring and transformation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Sharma & CO	Exact match	Birmingham, United KingdomHQ recorded Sep 28, 2026	n/a	71 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 28, 2026 · View company records in RevenueBase
18	NEW Link Consulting	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	69 contacts →
	Exact match “In complex transformation programmes, risk, regulation, financial crime, data, technology and operations no longer sit in separate silos.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Candesic	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	66 contacts →
	Exact match “Candesic is a leading specialist healthcare, pharma & life sciences and medtech management consulting firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Xlr8	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	59 contacts →
	Exact match “Consult us for.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Cortus Advisory Group	Exact match	Manchester, United KingdomHQ recorded Sep 28, 2026	51-200	55 contacts →
	Exact match “An award-winning specialist delivering high-impact, senior-led services across the deal lifecycle.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Collinson Grant	Exact match	Manchester, United KingdomHQ recorded Sep 28, 2026	51-200	50 contacts →
	Exact match “Collinson Grant helps clients throughout the world to improve efficiency and profitability.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	HNH Partners	Exact match	Belfast, United KingdomHQ recorded Sep 28, 2026	11-50	50 contacts →
	Exact match “Dedicated to delivering excellence in deal advisory, debt advisory, taxation, transaction services and business advisory services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Pmsi Strategy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	45 contacts →
	Exact match “PMSI is a management consulting firm specialising in commercial due diligence, market intelligence and strategy consulting.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	POE Advisory	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	45 contacts →
	Exact match “Three practice areas built for the demands of PE, family offices, asset managers, investors and portfolio businesses.” Recorded in the RevenueBase company graph · Sep 28, 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 “deal management consulting firms”. 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 25 of 1,805 deal management consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 12,492 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Deal management consulting firms based in the United Kingdom at a glance

As of Sep 28, 2026

39.8%Verified-email coverage

17.4Average contacts per company

1-10Median size (employees)

39.2%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,472

11-50

225

51-200

201-500

501-1,000

1,001-5,000

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 1,805 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 “deal management consulting 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 12,492 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 28, 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.

Deal management consulting firms 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 “deal management consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many deal management consulting firms are there based in the United Kingdom?

RevenueBase identified 1,805 company matches for deal management consulting 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?

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

Which city has the most deal management consulting firms?

London leads with 708 company records, followed by Manchester (30) and Bristol (25).

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 12,492 professional contacts with verified work emails tracked across these 1,805 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 28, 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.