Company lists · Data refreshed November 2026

Top 25 Esg communications firms worldwide

Name: Esg communications firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,917 companies tracked

RevenueBase identified 6,917 company matches for esg communications firms worldwide as of November 2026 and tracks 56,255 professional contacts across them, including 18,093 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for esg communications firms 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 esg communications firms 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

6,917Companies

56,255Contacts tracked

18,093Verified emails

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The 25 largest esg communications firms worldwide

Ranked by team size

Top 25 of 6,917 company matches for esg communications firms 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	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	930 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Morningstar Sustainalytics	Exact match	Amsterdam, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	919 contacts →
	Exact match “Morningstar Sustainalytics data and insights allow investors and companies to spend less time grappling with ESG and climate, and more time making the most of it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Achilles Information Limited	Exact match	Abingdon, United KingdomHQ recorded Nov 6, 2026	501-1,000	898 contacts →
	Exact match “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Atrevia	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	501-1,000	656 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Prosek Partners	Exact match	New York, United StatesHQ recorded Nov 6, 2026	201-500	592 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Inpress Porter Novelli	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	201-500	507 contacts →
	Exact match “A InPress Porter Novelli é uma agência de comunicação full service, com mais de 150 clientes nos segmentos corporativo, consumo, mídia e entretenimento, saúde, tecnologia…” 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	CFC BIG Ideas	Exact match	Kyiv, UkraineHQ recorded Nov 6, 2026	n/a	415 contacts →
	Exact match “СFC Big Ideas is a communications agency specializing in international projects, government relations & PR.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	DKC	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	201-500	375 contacts →
	Exact match “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	WMH Project	Exact match	Courbevoie, FranceHQ recorded Nov 6, 2026	201-500	350 contacts →
	Exact match “WMH Project est un des groupes de communication hors média leaders en France et en Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	ROMAN	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	51-200	335 contacts →
	Exact match “Roman is a communication and Public Relations cross sector agency with 30 years’ experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	V360 Group	Exact match	Okhla, IndiaHQ recorded Nov 6, 2026	201-500	307 contacts →
	Exact match “Value 360 Communications is India’s first PR Company with a focussed approach for early stage business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Hopscotch Groupe	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	301 contacts →
	Exact match “HOPSCOTCH est un groupe de communication international fondé en France, porté par une vision entrepreneuriale et par la complémentarité de ses talents et de ses expertises.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Kindred	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	299 contacts →
	Exact match “We are Kindred.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	M&c Saatchi World Services	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	294 contacts →
	Exact match “M&C Saatchi World Services is an issues-focused communications agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Approach Comunicação	Exact match	São Paulo E Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	201-500	288 contacts →
	Exact match “Set up in 1996, Approach is directed by three partners with experience and credibility in the communication market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	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
19	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
20	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
21	Harmon Corporate Affairs	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	51-200	206 contacts →
	Exact match “Harmon is a strategic consulting firm that advises organizations on interpreting their environment and connecting with their stakeholders through non-market strategies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	PRR	Exact match	Seattle, DC, United StatesHQ recorded Nov 6, 2026	51-200	199 contacts →
	Exact match “PRR is purpose-driven communications firm with deep expertise in the health, transportation, environmental, and consumer sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Encender Comunicación S.A	Exact match	Buenos Aires, ArgentinaHQ recorded Nov 6, 2026	51-200	196 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Stirrup Communication Consultants	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	51-200	193 contacts →
	Exact match “Stirrup Communication Consultants Pvt Ltd (Stirrup), previously known as AICL Communications Limited, is a corporate reporting, ESG, stakeholder communications consultancy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Kreab España	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	51-200	188 contacts →
	Exact match “Kreab es una consultora de Comunicación y Asuntos Públicos fundada en Suecia en 1970.” 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 “esg communications 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 6,917 esg communications firms worldwide

See the full list, filter by size, metro and specialty, and access 18,093 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Esg communications firms worldwide at a glance

As of Nov 6, 2026

32.2%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

5,165

11-50

1,444

51-200

210

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 esg communications firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “esg communications 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. 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 18,093 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.

Esg communications firms by location

65 lists · largest first

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

How many esg communications firms are there worldwide?

RevenueBase identified 6,917 company matches for esg communications firms 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?

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

Which country has the most esg communications firms?

The United States leads with 968 companies, followed by the United Kingdom (547) and Brazil (444). Every esg communications firms list by country and city is linked on this page.

Which city has the most esg communications firms?

London leads with 270 company records, followed by Sao Paulo (165) and New York (121).

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 18,093 professional contacts with verified work emails tracked across these 6,917 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.