Company lists · Data refreshed September 2026

Top 25 Enterprise communication consulting firms based in London, United Kingdom

Name: Enterprise communication 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 Sep 28, 2026 299 companies tracked

RevenueBase identified 299 company matches for enterprise communication consulting firms associated with London, United Kingdom as of September 2026 and tracks 2,294 professional contacts across them, including 802 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for enterprise communication 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 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

299Companies

2,294Contacts tracked

802Verified emails

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The 25 largest enterprise communication consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 299 company matches for enterprise communication consulting firms 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	Cartesian	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	302 contacts →
	Exact match “Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	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
3	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
4	SOH	Exact match	London, United KingdomHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
5	AB	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	40 contacts →
	Exact match “We help organisations reach their full potential by engaging, informing and inspiring their audiences.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Decision Inc. UK	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	35 contacts →
	Exact match “Decision Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	JB Communications LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	34 contacts →
	Exact match “We believe that developing the right dialogue helps our clients change mind-sets and create new ways of engagement, driving positive business results.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Maple Networks	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	30 contacts →
	Exact match “We’re the team that the IT leaders of tech-dependant organisations come to when they need to really shake things up, innovate (effectively), and tackle their transformational…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	JP Reis	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	26 contacts →
	Exact match “JP Reis helps financial trading organizations make better technology decisions and deliver complex transformation programs with confidence.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Streets Consulting	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	22 contacts →
	Exact match “Streets Consulting Ltd is a business development, marketing and communications consultancy supporting international financial services, technology and fast-growth companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	RND Systems Integration	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	21 contacts →
	Exact match “RnD Systems Integration is an IT consultancy based in, London.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Voyager Solutions	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	20 contacts →
	Exact match “Voyager Solutions provide business change and implementation support for process, people and technology transformation programmes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Seven Consultancy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	19 contacts →
	Exact match “We are a team of experts who are passionate about the brands and organisations we work with.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Platform Communications	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	18 contacts →
	Exact match “Propel Your Business Own the narrative, elevate your brand and drive sales success with our complete comms offering based on decades of industry experience.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	AGL Communication	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	18 contacts →
	Exact match “Why great communication matters: We believe great communication is what turns individuals into teams and effort into progress.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Bowen Craggs	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “We are experts in global online corporate communications.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Cedar Consulting NOW Version 1	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	15 contacts →
	Exact match “Cedar Consulting (Cedar) provides Application, Business, Technology and Training consulting services on a global basis, with offices in the United Kingdom, Switzerland, Australia…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Recenso Services	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	15 contacts →
	Exact match “Our sole mission is to help you deliver successful programmes faster.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	HEED	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	15 contacts →
	Exact match “Heed is a leading provider of innovative communication solutions for the modern workplace.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Frank, Bright & Abel	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Frank, Bright & Abel is a creative communications consultancy shaped to fit our clients' brand, employer brand, marketing and communications challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Asygma	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	12 contacts →
	Exact match “At Asygma, we're more than a technology provider; we're your trusted advisor and partner in growth.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Celicourt Communications	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	10 contacts →
	Exact match “The Celicourt team has considerable experience advising clients ranging from small fast growing businesses to some of the world's leading companies, as well as supporting…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Indaba Communications	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Communication at its best starts with a conversation." That is the meaning behind Indaba, and it is the philosophy that drives our agency.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Acumen BAY Consultancy Limited	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Most organisations don't have a technology problem.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Bright Space Communications	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “We are Bright Space – an award winning, strategy-led creative consultancy that helps businesses communicate value where it matters most.” 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 “enterprise communication 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 25 of 299 enterprise communication consulting firms based in London, United Kingdom

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Enterprise communication consulting firms based in London, United Kingdom at a glance

As of Sep 28, 2026

35.0%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

205

11-50

51-200

201-500

1,001-5,000

5,001-10,000

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 299 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 “enterprise communication 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 802 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.

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

How many enterprise communication consulting firms are there based in London, United Kingdom?

RevenueBase identified 299 company matches for enterprise communication consulting firms 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?

Cartesian 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 enterprise communication consulting firms?

London leads the United Kingdom with 299 company records, followed by Birmingham (11) and Bristol (10).

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 802 professional contacts with verified work emails tracked across these 299 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.