Company lists · Data refreshed October 2026

Top 23 Internal communications consulting firms based in London, United Kingdom

Name: Internal communications consulting firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 1,253 companies tracked

RevenueBase identified 1,253 company matches for internal communications consulting firms associated with London, United Kingdom as of October 2026 and tracks 12,228 professional contacts across them, including 5,347 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for internal communications consulting firms 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 October 1, 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 Oct 1, 2026 How this list was built

1,253Companies

12,228Contacts tracked

5,347Verified emails

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The 23 largest internal communications consulting firms based in London, United Kingdom

Ranked by team size

Top 23 of 1,253 company matches for internal communications consulting firms based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Elixirr	Exact match	London, United KingdomHQ recorded Oct 1, 2026	501-1,000	275 contacts →
	Exact match “An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Sheffield Haworth	Exact match	London, United KingdomHQ recorded Oct 1, 2026	201-500	244 contacts →
	Exact match “Sheffield Haworth is a global consultancy founded in 1993.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	SMP Group	Exact match	London, United KingdomHQ recorded Oct 1, 2026	201-500	221 contacts →
	Exact match “We are an insight led marketing communications team, delivering leading innovations and experiences that are proven to drive business growth.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Radley Yeldar	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
5	CDR Citigate Dewe Rogerson	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	190 contacts →
	Exact match “CDR is a leading global strategic communications consultancy.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	SHM Productions LTD	Exact match	London, United KingdomHQ recorded Oct 1, 2026	n/a	186 contacts →
	Exact match “SHM is a small consulting firm based in London.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Hanover Communications	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
8	Cavendish	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	176 contacts →
	Exact match “Helping organisations build and protect value in complex and contested environments.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Havas People	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
10	Lansons Team Farner	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
11	ORG	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	139 contacts →
	Exact match “We believe that change is an opportunity to thrive.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Instinctif Partners	Exact match	London, United KingdomHQ recorded Oct 1, 2026	201-500	130 contacts →
	Exact match “Instinctif UK has officially rebranded to TEAM LEWIS.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Hanbury Strategy	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	125 contacts →
	Exact match “Hanbury is a strategic advisory firm that turns insight into impact.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Copper Consultancy	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	114 contacts →
	Exact match “At Copper, we combine insight, intelligence and creative communications expertise to deliver measurable impact for our clients.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Gallagher Employee Experience & Communication	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
16	Camargue	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	111 contacts →
	Exact match “Camargue is an award-winning, employee-owned communications agency.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	VMA Group	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	101 contacts →
	Exact match “VMA Group delivers talent solutions that shape and elevate teams globally.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	SOH	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	96 contacts →
	Exact match “We’re service communication experts – using a mix of science, creativity and service know-how to improve how you talk with your customers through all channels and media, from…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	The PHA Group	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	92 contacts →
	Exact match “PHA is an award-winning earned-first integrated communications agency.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Connect Group	Exact match	London, United KingdomHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
21	Heavenly	Exact match	London, United KingdomHQ recorded Oct 1, 2026	11-50	85 contacts →
	Exact match “Heavenly is a global, independent creative consultancy, founded in 2003.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Design Portfolio	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	82 contacts →
	Exact match “Design Portfolio helps forward-thinking companies build trust with their stakeholders through creative storytelling, integrated communications, and sustainability strategies.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Cirkle	Exact match	London, United KingdomHQ recorded Oct 1, 2026	51-200	78 contacts →
	Exact match “At Cirkle, we have 25 years' experience delivering comms.” Recorded in the RevenueBase company graph · Oct 1, 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 communications consulting firms”. 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 23 of 1,253 internal communications consulting firms based in London, United Kingdom

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Internal communications consulting firms based in London, United Kingdom at a glance

As of Oct 1, 2026

43.7%Verified-email coverage

9.8Average contacts per company

1-10Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

906

11-50

268

51-200

201-500

501-1,000

1,001-5,000

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 1,253 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 “internal communications consulting firms” 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 5,347 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 October 1, 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.

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

How many internal communications consulting firms are there based in London, United Kingdom?

RevenueBase identified 1,253 company matches for internal communications consulting firms associated with London, United Kingdom as of October 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?

Elixirr 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 internal communications consulting firms?

London leads the United Kingdom with 1,253 company records, followed by Manchester (53) and Bristol (45).

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 5,347 professional contacts with verified work emails tracked across these 1,253 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 October 1, 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.