Company lists · Data refreshed November 2026

Top 25 Internal communication consultants worldwide

Name: Internal communication consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 17,500 companies tracked

RevenueBase identified 17,500 company matches for internal communication consultants worldwide as of November 2026 and tracks 104,737 professional contacts across them, including 25,481 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for internal communication consultants worldwide, 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. Country and city lists for internal communication consultants follow the table.

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

17,500Companies

104,737Contacts tracked

25,481Verified emails

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The 25 largest internal communication consultants worldwide

Ranked by team size

Top 25 of 17,500 company matches for internal communication consultants worldwide, 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	Diversified	Exact match	Plano, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,744 contacts →
	Exact match “At Diversified, we leverage the best in technology and ongoing advisory services to transform businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Improfit	Exact match	Montevideo, UruguayHQ recorded Nov 6, 2026	n/a	1,851 contacts →
	Exact match “Improfit es una agencia de comunicación corporativa y organizacional fundada en en Montevideo, Uruguay.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Ruder Finn	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	942 contacts →
	Exact match “Ruder Finn is one of the world’s largest global independent integrated marketing and communications agencies, leading at the intersection of technology, human creativity, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Ketchum	Exact match	New York, United StatesHQ recorded Nov 6, 2026	1,001-5,000	794 contacts →
	Exact match “We are Ketchum, a global communications consultancy fueled by empathy and intelligence – progress at work for innovation, our employees and our clients since 1923.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Porter Novelli	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	784 contacts →
	Exact match “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	JKL	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	51-200	508 contacts →
	Exact match “JKL is now Kekst CNC Stockholm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Sodali & CO	Exact match	New York, United StatesHQ recorded Nov 6, 2026	501-1,000	452 contacts →
	Exact match “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	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
9	PR Pundit Havas RED	Exact match	Gurgaon, IndiaHQ recorded Nov 6, 2026	51-200	337 contacts →
	Exact match “PR Pundit Havas Red, part of the Havas Group (one of the world’s largest advertising and communication networks), is an award-winning integrated communications consultancy with a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Miltton	Exact match	Helsinki, FinlandHQ recorded Nov 6, 2026	201-500	286 contacts →
	Exact match “We are an explorative, dynamic and constantly curious consulting group, equipped to offer insight and inspiration to our clients in a changing world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Kreab Worldwide	Exact match	Norrmalm, SwedenHQ recorded Nov 6, 2026	501-1,000	247 contacts →
	Exact match “With 50 years of experience in strategic communications, we are proud to say that we have played an integral part in shaping the business landscape as we know it today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Tinkle	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	201-500	241 contacts →
	Exact match “Expertos en comunicación cualitativa supra-especializada en corporativo, financiero, de marca, de reputación, de situaciones especiales, de ESG y workplace culture.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	LPM Comunicação	Exact match	Lisbon, PortugalHQ recorded Nov 6, 2026	51-200	240 contacts →
	Exact match “LPM is the leading Communication and Public Relations consultancy in Portugal.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	SEC Newgate Italia	Exact match	Milan, ItalyHQ recorded Nov 6, 2026	51-200	234 contacts →
	Exact match “Al cuore di ogni organizzazione ci sono le sue relazioni: collaboratori, clienti, filiera, territorio, istituzioni… Perché sono gli "altri" i terminali del suo agire e i…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	LÁ NA Firma	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	n/a	222 contacts →
	Exact match “Prazer, somos o LÁ NA FIRMA!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Radley Yeldar	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	218 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 · Nov 6, 2026 · View company records in RevenueBase
17	Headland	Exact match	City Of London, United KingdomHQ recorded Nov 6, 2026	51-200	213 contacts →
	Exact match “We are a communications consultancy powered by collaboration.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Orchestra	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	212 contacts →
	Exact match “Orchestra is a strategic communications and marketing company purpose-built for a world defined by speed, fragmentation and unprecedented transparency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Oficina Consultoria	Exact match	Brasília, BrazilHQ recorded Nov 6, 2026	51-200	212 contacts →
	Exact match “A Oficina Consultoria é a parceira estratégica para construir reputação e relacionamento com histórias e causas de impacto.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Dusens Group	Exact match	Nice, FranceHQ recorded Nov 6, 2026	51-200	198 contacts →
	Exact match “Dusens Group is an international communications consultancy group present in Europe, Africa and the Middle East and structured around 5 areas of expertise: Consulting, Branding…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Omega Digital	Exact match	Fourways, South AfricaHQ recorded Nov 6, 2026	51-200	191 contacts →
	Exact match “At Omega our purpose is to solve complex problems through collaboration solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	TACT	Exact match	Québec, QC, CanadaHQ recorded Nov 6, 2026	51-200	185 contacts →
	Exact match “Founded in September 2011, TACT Intelligence-conseil is composed of a group of experienced, professional communicators seeking to create a Québec-owned consulting agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Wellcom	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	179 contacts →
	Exact match “How can you build and protect your Image without taking Opinions into account?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Oxygen	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	176 contacts →
	Exact match “Since our mission has been to support companies and organizations in building powerful and authentic communication strategies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Brainsonic	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	174 contacts →
	Exact match “Nous sommes une « blended agency » de plus de 120 talents venus de différents horizons, qui combine étroitement compétences éditoriales, créatives et techniques.” 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 “internal communication consultants”. 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 17,500 internal communication consultants worldwide

See the full list, filter by size, metro and specialty, and access 25,481 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal communication consultants worldwide at a glance

As of Nov 6, 2026

24.3%Verified-email coverage

6.0Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

14,636

11-50

2,412

51-200

295

201-500

501-1,000

1,001-5,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for internal communication consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “internal communication consultants” 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. 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 25,481 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.

Internal communication consultants by location

108 lists · largest first

Every Internal communication consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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

How many internal communication consultants are there worldwide?

RevenueBase identified 17,500 company matches for internal communication consultants worldwide 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?

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

Which country has the most internal communication consultants?

The United States leads with 2,777 companies, followed by France (1,356) and the United Kingdom (1,084). Every internal communication consultants list by country and city is linked on this page.

Which city has the most internal communication consultants?

London leads with 427 company records, followed by Paris (381) and Sao Paulo (327).

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 25,481 professional contacts with verified work emails tracked across these 17,500 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.