Company lists · Data refreshed September 2026

Top 24 Communications consultancies based in London, United Kingdom

Name: Communications consultancies 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 2,255 companies tracked

RevenueBase identified 2,255 company matches for communications consultancies associated with London, United Kingdom as of September 2026 and tracks 27,337 professional contacts across them, including 10,324 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for communications consultancies associated with London, 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 28, 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 28, 2026 How this list was built

2,255Companies

27,337Contacts tracked

10,324Verified emails

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The 24 largest communications consultancies based in London, United Kingdom

Ranked by team size

Top 24 of 2,255 company matches for communications consultancies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Grayling	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	550 contacts →
	Exact match “We are Grayling, the world's local communications agency.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Other Creative Limited	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	300 contacts →
	Exact match “other is the creative business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Four Agency Worldwide	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
4	M&c Saatchi World Services	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	272 contacts →
	Exact match “M&C Saatchi World Services is an issues-focused communications agency.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Premier	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	272 contacts →
	Exact match “Creative communications for entertainment, arts and culture.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	CT Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	233 contacts →
	Exact match “CT Group is a global consultancy that uniquely combines research, intelligence, campaigns and advisory services, to deliver the results our clients need.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Portland	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	229 contacts →
	Exact match “Portland is a consultancy specialising in public affairs, corporate affairs and geopolitics.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Brands2life	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
9	MHP Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	224 contacts →
	Exact match “MHP Group is the integrated communications agency built for the Networked Age – a world that’s increasingly connected, complex, polarised and activist.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Havas Media Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	220 contacts →
	Exact match “Target Media is the UK's leading independent entertainment and lifestyle media agency, with over sixty clients in the Games, Film, Youth, Home Entertainment and Leisure industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Radley Yeldar	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	198 contacts →
	Exact match “Radley Yeldar is an award-winning, independent London and Birmingham-based creative consultancy with more than 200 communications specialists.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	CDR Citigate Dewe Rogerson	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	190 contacts →
	Exact match “CDR is a leading global strategic communications consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Hanover Communications	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	177 contacts →
	Exact match “Hanover is an award-winning communications consultancy that advises enterprises, institutions, and individuals on rewiring their strategies for long-term success.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Cavendish	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
15	Milltown Partners	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	174 contacts →
	Exact match “Milltown Partners is a global advisory firm working with influential organisations and individuals on the communications and public policy challenges that define their reputations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Havas People	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
17	Bacchus Agency	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	145 contacts →
	Exact match “Global Creative Communications.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Lansons Team Farner	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	143 contacts →
	Exact match “Organisations and brands turn to us to shape, protect and transform their reputations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	SEC Newgate UK	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	142 contacts →
	Exact match “Strategic corporate affairs in the UK and around the globe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	ART Studio	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
21	Cognito	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	131 contacts →
	Exact match “Cognito is the global communications agency for finance, technology and the climate transition.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Instinctif Partners	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	130 contacts →
	Exact match “Instinctif UK has officially rebranded to TEAM LEWIS.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Hanbury Strategy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	125 contacts →
	Exact match “Hanbury is a strategic advisory firm that turns insight into impact.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	RED Consultancy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	121 contacts →
	Exact match “At Red Consultancy, we help brands take on tomorrow – with clarity, creativity, and the confidence to lead.” Recorded in the RevenueBase company graph · Sep 28, 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 “communications consultancies”. 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 24 of 2,255 communications consultancies based in London, United Kingdom

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Communications consultancies based in London, United Kingdom at a glance

As of Sep 28, 2026

37.8%Verified-email coverage

12.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,530

11-50

580

51-200

106

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,255 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 London, United Kingdom whose business descriptions match “communications consultancies” 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 10,324 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 28, 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.

Communications consultancies by metro in the United Kingdom

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 “communications consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many communications consultancies are there based in London, United Kingdom?

RevenueBase identified 2,255 company matches for communications consultancies associated with London, 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?

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

Which city in the United Kingdom has the most communications consultancies?

London leads the United Kingdom with 2,255 company records, followed by Manchester (118) and Edinburgh (66).

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 10,324 professional contacts with verified work emails tracked across these 2,255 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 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 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.