Company lists · Data refreshed September 2026

Top 25 Cto recruitment services based in London, United Kingdom

Name: Cto recruitment services 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 180 companies tracked

RevenueBase identified 180 cto recruitment services headquartered in London, United Kingdom as of September 2026 and tracks 1,124 professional contacts across them, including 444 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers cto recruitment services 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

180Companies

1,124Contacts tracked

444Verified emails

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The 25 largest cto recruitment services based in London, United Kingdom

Ranked by team size

Top 25 of 180 cto recruitment services 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 cto recruitment services: 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	Client Server	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	114 contacts →
	Indirect evidence “At Client Server, we are driven by technology and powered by people.” Source: RevenueBase Database · checked Sep 28, 2026
2	BPO Recruit	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	91 contacts →
	Partial evidence “We are an executive recruitment firm based in the City of London and are specialists in the search and selection of professionals in Technology, Digital & RPA, BPO, Shared…” Source: RevenueBase Database · checked Sep 28, 2026
3	Tritonexec	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	90 contacts →
	Indirect evidence “TritonExec is Executive Search firm specializing Technology, Digital Transformation Services, and Private Equity-backed growth firms.” Source: RevenueBase Database · checked Sep 28, 2026
4	Barclay Simpson	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	59 contacts →
	Partial evidence “Barclay Simpson is a specialist recruitment consultancy supporting blue-chip organisations across international markets.” Source: RevenueBase Database · checked Sep 28, 2026
5	Camino Search	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect evidence “Value Creation.” Source: RevenueBase Database · checked Sep 28, 2026
6	Oakland Search	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “Experienced international technology recruiters, bridging the gap between executive search and contingency methods.” Source: RevenueBase Database · checked Sep 28, 2026
7	Consortia	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “Consortia is a specialist technology recruitment and executive search partner connecting talent with organisations globally across Product, UX & Design, Data & AI, and Engineering.” Source: RevenueBase Database · checked Sep 28, 2026
8	Scope At Recruitment	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “Scope AT was founded in November to provide specialist IT recruitment consultancy services to the financial services market place.” Source: RevenueBase Database · checked Sep 28, 2026
9	Thomson Keene	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “Thomson Keene is a specialist Technology Search firm with global reach.” Source: RevenueBase Database · checked Sep 28, 2026
10	Sigma Consulting Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	20 contacts →
	Partial evidence “Sigma Consulting Group provides end-to-end recruitment solutions and strategic business consulting services across high-demand sectors like healthcare, technology, oil and gas…” Source: RevenueBase Database · checked Sep 28, 2026
11	Albany Partners	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “The Albany brand has a reputation for delivering results in search within the investor backed technology ecosystem.” Source: RevenueBase Database · checked Sep 28, 2026
12	LT Harper Recruitment Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “At LT Harper we specialise in cyber security, artificial intelligence, legal tech and tech transformation recruitment.” Source: RevenueBase Database · checked Sep 28, 2026
13	Founders Keepers	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Founders Keepers is an executive search firm, building leadership teams for growth stage and venture backed companies.” Source: RevenueBase Database · checked Sep 28, 2026
14	3point1 Consulting	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “COMPANY OVERVIEW: Formed in early 2020, during one of the most challenging global crises in modern history, 3Point1 is a coming together of expertise from the worlds of consulting…” Source: RevenueBase Database · checked Sep 28, 2026
15	Round8 Talent Search	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “round8 is a leading multi-channel talent search specialist in Digital, Media and Advertising Technology, headquartered in London and hiring across EMEA, APAC and the US.” Source: RevenueBase Database · checked Sep 28, 2026
16	PANDA	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Panda is a leading talent search firm connecting ambitious tech companies with the best and brightest minds.” Source: RevenueBase Database · checked Sep 28, 2026
17	Brave Technology Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Brave Technology Talent is a UK-based Executive Search Company working with global vendors, system integrators and consultancies providing a search and selection service to find…” Source: RevenueBase Database · checked Sep 28, 2026
18	Truenorth	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “We are on a mission to make people happier at work.” Source: RevenueBase Database · checked Sep 28, 2026
19	nimbl.ai	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect 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 28, 2026
20	Atara Partners	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “We help ambitious founders and tech companies hire the executives that change the course of their businesses Atara Partners is a specialist executive search firm working with…” Source: RevenueBase Database · checked Sep 28, 2026
21	Suzie Walker Executive Search	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Suzie Walker Executive Search is a firm of specialist headhunters with an expert team recruiting interim and permanent senior leaders for B2C and B2B marketing, digital and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Globetec Solutions	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Globetec Solutions is a market leading international executive search firm operating in the IT Services, Technology and Consulting markets since 2004.” Source: RevenueBase Database · checked Sep 28, 2026
23	The Search Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “We specialise in hiring senior leadership teams for technology and product-led businesses.” Source: RevenueBase Database · checked Sep 28, 2026
24	William Parker Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “William Parker Group specialises in placing across Pharma, Biotech, CRO, CDMO and eClinical organisations.” Source: RevenueBase Database · checked Sep 28, 2026
25	Resource17	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Resource17 partners with pioneering investors, asset developers / owners and technology companies, that are delivering a positive impact across the climate and net zero agendas.” 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: cto recruitment services. 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 cto recruitment services.
Partial evidence: Its own public description names part of cto recruitment services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cto recruitment services. 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 180 cto recruitment services based in London, United Kingdom

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Cto recruitment services based in London, United Kingdom at a glance

As of Sep 28, 2026

39.5%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

141

11-50

51-200

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 180 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 cto recruitment services, 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 “cto recruitment services”. 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 cto recruitment services), 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 cto recruitment services, 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, 444 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.

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 cto recruitment services, 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 cto recruitment services are there based in London, United Kingdom?

RevenueBase identified 180 cto recruitment services 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?

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

Which city in the United Kingdom has the most cto recruitment services?

London leads the United Kingdom with 180 headquartered companies, followed by Manchester (11) and Milton Keynes (7).

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 444 verified decision-maker contacts tracked across these 180 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.