Company lists · Data refreshed September 2026

Top 25 Platform add-on search consultants based in London, United Kingdom

Name: Platform add-on search 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 29, 2026 75 companies tracked

RevenueBase identified 75 platform add-on search consultants headquartered in London, United Kingdom as of September 2026 and tracks 690 professional contacts across them, including 174 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers platform add-on search 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 29, 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 29, 2026 86% judged on-target in blind review

75Companies

690Contacts tracked

174Verified emails

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The 25 largest platform add-on search consultants based in London, United Kingdom

Ranked by team size

Top 25 of 75 platform add-on search consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to platform add-on search 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	Annapurna	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	119 contacts →
	Strong evidence “At Annapurna, we are focused on becoming a trusted responsible search partner for our clients.” Source: RevenueBase Database · checked Sep 29, 2026
2	Chapmanblack	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	48 contacts →
	Strong evidence “EXCELLENCE, FAST ChapmanBlack is an award-winning Executive & Leadership search firm with over 150 consultants based in London, Dusseldorf, Munich, Berlin, New York and Detroit.” Source: RevenueBase Database · checked Sep 29, 2026
3	Irving Knight Group	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	38 contacts →
	Partial evidence “Founded in 2020, Irving Knight is redefining executive search.” Source: RevenueBase Database · checked Sep 29, 2026
4	Delta Executive Search	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	26 contacts →
	Partial evidence “Founded in 2002, Delta Executive Search is the specialist boutique executive search firm with a dedicated global focus.” Source: RevenueBase Database · checked Sep 29, 2026
5	Resource Professionals	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	21 contacts →
	Strong evidence “Resource Professionals are a firm of search consultants specialising in the recruitment to recruitment market.” Source: RevenueBase Database · checked Sep 29, 2026
6	AGS Associates	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “AGS Associates is a distinguished Executive Search and Consulting firm.” Source: RevenueBase Database · checked Sep 29, 2026
7	Carter Wahlberg	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “What stands Carter Wahlberg apart is how much value we place into developing relationships.” Source: RevenueBase Database · checked Sep 29, 2026
8	Radiant Search	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	13 contacts →
	Partial evidence “We help executive search firms hire outstanding talent.” Source: RevenueBase Database · checked Sep 29, 2026
9	Bourne Consulting	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	12 contacts →
	Indirect evidence “At Bourne Consulting, our mission is clear: to match top-tier talent with opportunities that align perfectly with their skills and ambitions.” Source: RevenueBase Database · checked Sep 29, 2026
10	Vantage Market Entry	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	11 contacts →
	Strong evidence “Founded in 2001, Vantage Market Entry is a Notting Hill based Executive Search firm focused on the delivery of executives, teams and acquisitions to the global Management…” Source: RevenueBase Database · checked Sep 29, 2026
11	Pemberton Partners	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	11 contacts →
	Partial evidence “Pemberton Partners \| Executive Search & Talent Advisory London \| Doha \| Manila “Building great companies through great people - executive search, talent strategy, and leadership…” Source: RevenueBase Database · checked Sep 29, 2026
12	Sario Partners	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Sario Partners is a boutique search firm for the management consulting space.” Source: RevenueBase Database · checked Sep 29, 2026
13	nimbl.ai	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	9 contacts →
	Strong evidence “We are a high-tech boutique search & selection consultancy, focused on working with only top-tier professionals within the Artificial Intelligence / Big Data / Cloud & Digital…” Source: RevenueBase Database · checked Sep 29, 2026
14	Lincoln Cornhill Executive	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	9 contacts →
	Indirect evidence “Empowering organisations to achieve their strategic goals by connecting them with exceptional leaders within the Human Resources, Social Housing, Property Management and Supported…” Source: RevenueBase Database · checked Sep 29, 2026
15	Alex Partners	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Alex Partners is a European, founder-led, executive search consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
16	PLUG	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Strong evidence “PLUG is an international executive search consultancy dedicated to the luxury design industry.” Source: RevenueBase Database · checked Sep 29, 2026
17	Aston Executive Consulting LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Aston Executive offers Recruitment and Executive Search services to the IT, Engineering and Construction Sectors.” Source: RevenueBase Database · checked Sep 29, 2026
18	Burwood Partners	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Established in 2018, Burwood Partners is a boutique Executive Search firm specializing in niché, critical, and strategic hiring within the Management Consulting and Professional…” Source: RevenueBase Database · checked Sep 29, 2026
19	Carver Cross International	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Carver Cross International is an executive search boutique specializing in industries where innovation and precision are mission-critical.” Source: RevenueBase Database · checked Sep 29, 2026
20	Progressive People	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Progressive People is an executive search and leadership talent practice that focusses on the Digital Media / CTV, Adtech and the Media Publishing industries.” Source: RevenueBase Database · checked Sep 29, 2026
21	Generator Recruitment	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Executive Search Agency: Sales \| Leadership \| Consulting \| Tech Generator are an executive search agency focused on leadership, growth and sales positions-Servicing global…” Source: RevenueBase Database · checked Sep 29, 2026
22	Cara Executive Search	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “What we do: Executive Search for the Financial Services, Renewable Energy and CleanTech sectors.” Source: RevenueBase Database · checked Sep 29, 2026
23	Tonic International Recruitment	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Tonic is a boutique international search firm that specialises in the placement of experienced professionals into cross-border opportunities.” Source: RevenueBase Database · checked Sep 29, 2026
24	VA Search Verspui Associates LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	2 contacts →
	Partial evidence “VA Search is a European Executive Search and Career Coaching boutique.” Source: RevenueBase Database · checked Sep 29, 2026
25	Strat-Bridge	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Strong evidence “Strat-Bridge is a retained search firm focused on Partner, Director & Team hires into top-tier strategy and management consulting firms across Europe.” Source: RevenueBase Database · checked Sep 29, 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: platform add-on search 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 platform add-on search consultants.
Partial evidence: Its own public description names part of platform add-on search consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name platform add-on search 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 75 platform add-on search consultants based in London, United Kingdom

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Platform add-on search consultants based in London, United Kingdom at a glance

As of Sep 29, 2026

25.2%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 75 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 platform add-on search 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 “platform add-on search 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 platform add-on search 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 platform add-on search 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, 174 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 29, 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.

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 platform add-on search 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 platform add-on search consultants are there based in London, United Kingdom?

RevenueBase identified 75 platform add-on search 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?

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

Which city in the United Kingdom has the most platform add-on search consultants?

London leads the United Kingdom with 75 headquartered companies, followed by Leeds (5) and Birmingham (2).

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 174 verified decision-maker contacts tracked across these 75 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 29, 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.