Company lists · Data refreshed September 2026

Top 25 Agency management consultants based in London, United Kingdom

Name: Agency management consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 860 companies tracked

RevenueBase identified 860 agency management consultants headquartered in London, United Kingdom as of September 2026 and tracks 5,514 professional contacts across them, including 1,521 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers agency management consultants headquartered in London, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

860Companies

5,514Contacts tracked

1,521Verified emails

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The 25 largest agency management consultants based in London, United Kingdom

Ranked by team size

Top 25 of 860 agency management consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to agency management consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thomas Miller	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	423 contacts →
	Indirect evidence “The Thomas Miller Group is an international provider of market leading insurance services.” Source: RevenueBase Database · checked Sep 28, 2026
2	Jensten	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	203 contacts →
	Indirect evidence “Jensten is the connected broker of scale, delivering superior outcomes for commercial, corporate and personal clients through our advisory and service capabilities, supported by…” Source: RevenueBase Database · checked Sep 28, 2026
3	HFG Insurance Recruitment	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	128 contacts →
	Partial evidence “HFG is a leading international recruitment consulting firm that provides specialist professionals to leading General Insurance, Life, Reinsurance, Pensions and Management…” Source: RevenueBase Database · checked Sep 28, 2026
4	APR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	88 contacts →
	Indirect evidence “Founded in 2006, APR provide actuarial consulting and secondment services to over 45 life and general insurers, as well as other financial sector clients, across the UK, Ireland…” Source: RevenueBase Database · checked Sep 28, 2026
5	Change Management Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	74 contacts →
	Indirect evidence “Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.” Source: RevenueBase Database · checked Sep 28, 2026
6	Camelot	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	66 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
7	Oxbow Partners	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	64 contacts →
	Strong evidence “Oxbow Partners is a specialist management consultancy for the insurance industry.” Source: RevenueBase Database · checked Sep 28, 2026
8	Milliman UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	56 contacts →
	Indirect evidence “Milliman is among the world’s largest independent actuarial and consulting firms.” Source: RevenueBase Database · checked Sep 28, 2026
9	Lloyd & Partners Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	55 contacts →
	Indirect evidence “We provide industry-focused consulting, brokerage, and claims advocacy services, and leverage data, technology, and analytics to help reduce our clients’ total cost of risk.” Source: RevenueBase Database · checked Sep 28, 2026
10	Flock Associates	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	41 contacts →
	Indirect evidence “We elevate how your marketing operates.” Source: RevenueBase Database · checked Sep 28, 2026
11	Future Factory	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial evidence “We’re Future Factory and we’re pretty damn proud to be one of the UK’s leading business development consultancies.” Source: RevenueBase Database · checked Sep 28, 2026
12	Regency Grove Consultants	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “At Regency Grove we pride ourselves on providing each client with an exceptional standard of service to suit their specific needs and requirements.” Source: RevenueBase Database · checked Sep 28, 2026
13	Indecs Consulting Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “Independent insurance consultants providing bespoke consultancy for major and complex projects.” Source: RevenueBase Database · checked Sep 28, 2026
14	Acquisition INC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “Customer Acquisition seems to be the end goal of so much global marketing spend, yet the complexity of all the moving parts is often overlooked.” Source: RevenueBase Database · checked Sep 28, 2026
15	Alchemis	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “Alchemis was the first new business agency for the marketing, communications and creative industries and we continue to innovate.” Source: RevenueBase Database · checked Sep 28, 2026
16	Landmark Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	29 contacts →
	Indirect evidence “We at Landmark Underwriting Ltd are a specialist Managing General Agent with full delegated underwriting authority.” Source: RevenueBase Database · checked Sep 28, 2026
17	WPR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “WPR is an award winning recruitment agency founded in 2016.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ainsurco	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “AInsurCo \| Actuarial & Insurance Consulting \| Technology-Enabled Insurance Solutions AInsurCo is a specialist insurance consulting and technology firm helping insurers unlock…” Source: RevenueBase Database · checked Sep 28, 2026
19	Thetin	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “We're a performance-led brand and digital consultancy on a mission to elevate complicated brands, streamline operations, enhance customer experiences, and drive measurable growth…” Source: RevenueBase Database · checked Sep 28, 2026
20	AAR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “We are AAR.” Source: RevenueBase Database · checked Sep 28, 2026
21	Verve Communications	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Your organisation changes people’s lives.” Source: RevenueBase Database · checked Sep 28, 2026
22	Greenkite Bcorp	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “GK Associates and GK Ignite together form a mature, purposefully structured group of professional services businesses serving the insurance market.” Source: RevenueBase Database · checked Sep 28, 2026
23	TOP Line Marketing	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “Companies have long relied on the support of consultancies & agencies to address their business challenges.” Source: RevenueBase Database · checked Sep 28, 2026
24	WTS Hansuke	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “WTS Hansuke is a specialist professional services firm notable for its focus on excellent client service and agility.” Source: RevenueBase Database · checked Sep 28, 2026
25	Oneadvent	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “We empower MGAs from inception to exit.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: agency management consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names agency management consultants.
Partial evidence: Its own public description names part of agency management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name agency management consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 860 agency management consultants based in London, United Kingdom

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Agency management consultants based in London, United Kingdom at a glance

As of Sep 28, 2026

27.6%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

678

11-50

135

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 860 companies.

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 agency management consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “agency management consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names agency management consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among agency management consultants, and records with no verified work email. Companies headquartered outside London 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 its RevenueBase Smart Search 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, 1,521 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 28, 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.

Agency management consultants by metro in the United Kingdom

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names agency management consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many agency management consultants are there based in London, United Kingdom?

RevenueBase identified 860 agency management consultants headquartered in London, 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?

Thomas Miller, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most agency management consultants?

London leads the United Kingdom with 860 headquartered companies, followed by Manchester (53) and Bristol (32).

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 1,521 verified decision-maker contacts tracked across these 860 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 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 Smart Search, 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.