Company lists · Data refreshed November 2026

Top 25 Engagement agencies based in the United Kingdom

Name: Engagement agencies 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 10,964 companies tracked

RevenueBase identified 10,964 company matches for engagement agencies associated with the United Kingdom as of November 2026 and tracks 153,382 professional contacts across them, including 35,862 with verified work emails. London is the largest hub.

This list covers company matches for engagement agencies 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

10,964Companies

153,382Contacts tracked

35,862Verified emails

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The 25 largest engagement agencies based in the United Kingdom

Ranked by team size

Top 25 of 10,964 company matches for engagement agencies 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	Clinic	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	7,965 contacts →
	Exact match “Clinic is an independent creative agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	CARAT	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	2,313 contacts →
	Exact match “Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Staffline Recruitment Limited	Exact match	Nottingham, United KingdomHQ recorded Nov 6, 2026	501-1,000	2,107 contacts →
	Exact match “At Staffline, we make recruitment simple, strategic and effective.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Marketizon	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,989 contacts →
	Exact match “Marketizon is the leader in developing innovative, multi-channel marketing technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Office Angels	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	1,395 contacts →
	Exact match “For 40 years now, we’ve been helping you to find the right path to a happy and successful future whether you’re a jobseeker or an employer.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Ascensos	Exact match	Motherwell, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,323 contacts →
	Exact match “Ascensos is now Firstsource.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	TLC Worldwide	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	1,023 contacts →
	Exact match “TLC Worldwide is a global leader in customer engagement, loyalty, and reward solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Convergys Intelligent Contact	Exact match	Altrincham, United KingdomHQ recorded Nov 6, 2026	10001+	976 contacts →
	Exact match “At Convergys Intelligent Contact, we build sustainable revenue streams for our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	CPM UK	Exact match	Thame, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	905 contacts →
	Exact match “CPM is an international.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	ARC Hospitality Recruitment	Exact match	Liverpool, United KingdomHQ recorded Nov 6, 2026	10001+	857 contacts →
	Exact match “With over 17 years of experience, we are a trusted nationwide recruitment agency specialising in providing high-quality temporary staff in an array of roles to a wide range of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Halian Managed Services, Recruitment Agency & Contract Staffing	Exact match	St. Albans, United KingdomHQ recorded Nov 6, 2026	501-1,000	732 contacts →
	Exact match “Halian, with nearly 30 years of experience across the Middle East, Europe, and the US, is dedicated to shaping the future of Workforce Management and Managed Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Linney	Exact match	Mansfield, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	689 contacts →
	Exact match “We’re Linney, a connected marketing partner helping brands turn complexity into clarity across digital, physical and ecommerce channels.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Omnicom Media Group UK	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	688 contacts →
	Exact match “OMG UK delivers transformational experiences for consumers, clients and talent.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Form Worldwide	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	628 contacts →
	Exact match “Form Worldwide is a London-based global marketing communications agency with a digital edge.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Vertex Data Science	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	626 contacts →
	Exact match “Vertex is a leader in BPO and Customer Management Outsourcing, serving over 200 clients worldwide across many sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Arvatoconnect	Exact match	Datchet, United KingdomHQ recorded Nov 6, 2026	501-1,000	572 contacts →
	Exact match “Your world is changing at lightning speed; new business models, new technologies, new competitors, and new customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Moneypenny	Exact match	Wrexham, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	548 contacts →
	Exact match “Moneypenny is the leading customer conversations partner to businesses across the UK and US, blending exceptional people with proprietary AI technology to deliver trusted caller…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	RESQ	Exact match	Kingston Upon Hull, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	537 contacts →
	Exact match “Give your customers a voice with ResQ.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	AMV Bbdo	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	531 contacts →
	Exact match “We are a creative agency that solves big business problems for brands with big ambitions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Purple	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	481 contacts →
	Exact match “Purple is independent in philosophy, attitude and operation –offering a boutique in-house approach, the strategic requirements of each client are individually tailored from the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	N2o	Exact match	Maidenhead, United KingdomHQ recorded Nov 6, 2026	51-200	472 contacts →
	Exact match “N2O is a full-service creative brand experience agency that blends cultural intelligence, human insight and bold ideas to create moments people seek out, not scroll past.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Emperor	Exact match	Aldgate, United KingdomHQ recorded Nov 6, 2026	201-500	445 contacts →
	Exact match “Emperor is one of the UK's leading employee-owned creative communications agencies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Entourage	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	431 contacts →
	Exact match “In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	MVF	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	428 contacts →
	Exact match “MVF powers growth for our clients by connecting them to potential customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	High Society	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	418 contacts →
	Exact match “High Society provides hand-selected staff to the events industry – all trained to the very highest level, and all extremely reliable, genuinely personable and immaculately…” 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 “engagement agencies”. 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 10,964 engagement agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 35,862 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engagement agencies based in the United Kingdom at a glance

As of Nov 6, 2026

23.4%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

41.5%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

7,460

11-50

2,669

51-200

567

201-500

117

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 10,964 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 “engagement agencies” 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 35,862 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.

Engagement agencies 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 “engagement agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many engagement agencies are there based in the United Kingdom?

RevenueBase identified 10,964 company matches for engagement agencies 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?

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

Which city has the most engagement agencies?

London leads with 4552 company records, followed by Manchester (438) and Leeds (212).

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 35,862 professional contacts with verified work emails tracked across these 10,964 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.