Company lists · Data refreshed September 2026

Top 25 Internal communication agencies based in the United Kingdom

Name: Internal communication agencies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 739 companies tracked

RevenueBase identified 739 company matches for internal communication agencies associated with the United Kingdom as of September 2026 and tracks 12,808 professional contacts across them, including 4,686 with verified work emails. London is the largest hub.

This list covers company matches for internal communication 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 September 20, 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 20, 2026 How this list was built

739Companies

12,808Contacts tracked

4,686Verified emails

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The 25 largest internal communication agencies based in the United Kingdom

Ranked by team size

Top 25 of 739 company matches for internal communication agencies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	APS Group	Exact match	Stockport, United KingdomHQ recorded Sep 20, 2026	501-1,000	1,152 contacts →
	Exact match “We’ve been delivering marketing and communications since 1961.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Mullenlowe Global	Exact match	London, United KingdomHQ recorded Sep 20, 2026	1,001-5,000	544 contacts →
	Exact match “Happy to see you came here to learn a little more about us!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Emperor	Exact match	Aldgate, United KingdomHQ recorded Sep 20, 2026	201-500	415 contacts →
	Exact match “Emperor is one of the UK's leading employee-owned creative communications agencies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Four Agency Worldwide	Exact match	London, United KingdomHQ recorded Sep 20, 2026	201-500	292 contacts →
	Exact match “Four is one of the leading independent integrated communications agencies in the UK and the Middle East.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Brands2life	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	224 contacts →
	Exact match “We’re an award-winning, founder-led, communications agency based in London, Minneapolis, New York and San Francisco with an extensive global capability.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	We ARE Vista	Exact match	Leeds, United KingdomHQ recorded Sep 20, 2026	51-200	180 contacts →
	Exact match “Creative Communications that make a lasting impact.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	A&p Know HOW	Exact match	Preston, United KingdomHQ recorded Sep 20, 2026	n/a	179 contacts →
	Exact match “A&P is a multi-disciplined, award winning marketing communications agency who work with some of the UK's best known brands in both the private and public sectors.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Cavendish	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	176 contacts →
	Exact match “Helping organisations build and protect value in complex and contested environments.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Havas People	Exact match	London, United KingdomHQ recorded Sep 20, 2026	201-500	170 contacts →
	Exact match “At Havas People we shape meaningful brands for the changing worlds of work and study.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	H&h Agency	Exact match	Hessle, United KingdomHQ recorded Sep 20, 2026	n/a	159 contacts →
	Exact match “H&H - The UK’s leading Internal Communications and Employee Engagement agency Every day we throw our collective energy, knowledge and creativity into improving the way people…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Havas London	Exact match	London, United KingdomHQ recorded Sep 20, 2026	201-500	157 contacts →
	Exact match “From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	ART Studio	Exact match	London, United KingdomHQ recorded Sep 20, 2026	11-50	139 contacts →
	Exact match “A communication agency specialising in advertising, public relations, and digital media, Artbees' art studio has been in existence since 2006.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Citypress	Exact match	Manchester, United KingdomHQ recorded Sep 20, 2026	51-200	133 contacts →
	Exact match “Citypress is one of the UK’s leading communications agencies and we’re proud to represent some of the country’s biggest and best-loved brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	BIG Partnership	Exact match	Glasgow, United KingdomHQ recorded Sep 20, 2026	51-200	128 contacts →
	Exact match “BIG is an independent, integrated communications agency making brands unmissable through joined-up thinking across PR, creative and digital to deliver long-term impact and value.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Gallagher Employee Experience & Communication	Exact match	London, United KingdomHQ recorded Sep 20, 2026	10001+	113 contacts →
	Exact match “We are a global internal communication agency on a mission to help people feel different about work.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Battenhall	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	112 contacts →
	Exact match “Battenhall is an award-winning communications agency for the social media age.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Camargue	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	111 contacts →
	Exact match “Camargue is an award-winning, employee-owned communications agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Zinc Network	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	106 contacts →
	Exact match “Zinc Network is a full-service communications agency that helps governments, communities, businesses, and NGOs address some of the most complex issues facing the world today and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Essencemediacomx	Exact match	London, United KingdomHQ recorded Sep 20, 2026	501-1,000	103 contacts →
	Exact match “EssenceMediacom is GroupM’s newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	JBP	Exact match	Bristol, United KingdomHQ recorded Sep 20, 2026	11-50	101 contacts →
	Exact match “We're JBP, an award-winning full-service communications agency with our headquarters in Bristol, and offices in London, Warwick, Manchester and Cardiff.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	The PHA Group	Exact match	London, United KingdomHQ recorded Sep 20, 2026	51-200	92 contacts →
	Exact match “PHA is an award-winning earned-first integrated communications agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Connect Group	Exact match	London, United KingdomHQ recorded Sep 20, 2026	11-50	89 contacts →
	Exact match “Connect is a communications agency specialising in public affairs and political strategy, corporate communications and reputation management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Prettygreen The Global Fame Makers	Exact match	London, United KingdomHQ recorded Sep 20, 2026	11-50	68 contacts →
	Exact match “PrettyGreen, we’re the Global Fame Makers, an award-winning creative communications agency with big brand ambition and a boutique soul.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	MK Brand	Exact match	East Meon, United KingdomHQ recorded Sep 20, 2026	n/a	67 contacts →
	Exact match “Every brand makes promises to its customers, and the job of internal communication is to give employees the confidence, focus and motivation to make those promises real.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Scarlettabbott	Exact match	York, United KingdomHQ recorded Sep 20, 2026	11-50	64 contacts →
	Exact match “We make culture count We’re scarlettabbott, the leading independent employee experience and culture consultancy.” Recorded in the RevenueBase company graph · Sep 20, 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 “internal communication 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 739 internal communication agencies based in the United Kingdom

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Internal communication agencies based in the United Kingdom at a glance

As of Sep 20, 2026

36.6%Verified-email coverage

17.3Average contacts per company

1-10Median size (employees)

40.3%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

452

11-50

229

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 739 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 “internal communication 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 4,686 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 20, 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.

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

How many internal communication agencies are there based in the United Kingdom?

RevenueBase identified 739 company matches for internal communication agencies 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?

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

Which city has the most internal communication agencies?

London leads with 298 company records, followed by Bristol (20) and Manchester (20).

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 4,686 professional contacts with verified work emails tracked across these 739 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 20, 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.