Company lists · Data refreshed November 2026

Top 25 Sustainable development consultancies worldwide

Name: Sustainable development consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 19,079 companies tracked

RevenueBase identified 19,079 company matches for sustainable development consultancies worldwide as of November 2026 and tracks 179,192 professional contacts across them, including 59,672 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for sustainable development consultancies 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 5, 2026. Country and city lists for sustainable development consultancies 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 5, 2026 How this list was built

19,079Companies

179,192Contacts tracked

59,672Verified emails

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The 25 largest sustainable development consultancies worldwide

Ranked by team size

Top 25 of 19,079 company matches for sustainable development consultancies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	ERM	Exact match	London, United KingdomHQ recorded Nov 5, 2026	5,001-10,000	9,761 contacts →
	Exact match “Sustainability is our business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Roland Berger	Exact match	Munich, GermanyHQ recorded Nov 5, 2026	1,001-5,000	5,034 contacts →
	Exact match “Roland Berger is the only leading global strategy consultancy of European origin.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	SLR Consulting	Exact match	London, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	4,208 contacts →
	Exact match “SLR is a committed partner in our clients’ sustainability journeys.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	WSP I Sverige	Exact match	Stockholm-marievik, SwedenHQ recorded Nov 5, 2026	10001+	2,749 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	BDO Nederland	Exact match	Eindhoven, NetherlandsHQ recorded Nov 5, 2026	1,001-5,000	2,458 contacts →
	Exact match “At BDO, we help people and organisations achieve their sustainable future.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	GFA Consulting Group Gmbh	Exact match	Hamburg, GermanyHQ recorded Nov 5, 2026	1,001-5,000	1,453 contacts →
	Exact match “GFA Consulting Group is one of Europe's leading consulting firms in the field of international development cooperation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	IPE Global Limited	Exact match	New Delhi, IndiaHQ recorded Nov 5, 2026	501-1,000	1,452 contacts →
	Exact match “Headquartered in India with six international offices in Cambodia, Ethiopia, Kenya, the Philippines, Germany and the United Kingdom, IPE Global Group offers a range of integrated…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Tyréns AB	Exact match	SwedenHQ recorded Nov 5, 2026	1,001-5,000	1,371 contacts →
	Exact match “Tyréns is one of Sweden’s leading community development consultancies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	OLA	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	n/a	1,164 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	URBIS	Exact match	Melbourne, AustraliaHQ recorded Nov 5, 2026	501-1,000	1,144 contacts →
	Exact match “Urbis is more than just a consultancy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Ecorys	Exact match	Rotterdam, NetherlandsHQ recorded Nov 5, 2026	201-500	857 contacts →
	Exact match “We are an international provider of research, consulting, programme management and communications services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Tauw Nederland	Exact match	Deventer, NetherlandsHQ recorded Nov 5, 2026	1,001-5,000	818 contacts →
	Exact match “TAUW is een Europees advies- en ingenieursbureau.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Berenschot	Exact match	Utrecht, NetherlandsHQ recorded Nov 5, 2026	201-500	661 contacts →
	Exact match “Berenschot is an independent management consulting firm with a staff of over 400 people.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	SCE Aménagement & Environnement	Exact match	Nantes Cedex 2, FranceHQ recorded Nov 5, 2026	501-1,000	628 contacts →
	Exact match “SCE works closely for public and private actors on their sustainable territorial development projects.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	ADE	Exact match	Louvain-la-neuve, BelgiumHQ recorded Nov 5, 2026	n/a	596 contacts →
	Exact match “ADE is a consultancy providing independent advice for contributing to improve public decision-making.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Diagonal	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	501-1,000	584 contacts →
	Exact match “Diagonal is a pioneering socio-environmental management consultancy that helps companies, organizations and governments to raise their ESG standard and generate a positive…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Dalberg	Exact match	SingaporeHQ recorded Nov 5, 2026	501-1,000	566 contacts →
	Exact match “We are a global group working to build a more inclusive and sustainable world where all people, everywhere, can reach their fullest potential.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Biotope	Exact match	Mèze, FranceHQ recorded Nov 5, 2026	201-500	555 contacts →
	Exact match “Fondée en 1993 par des passionnés de nature engagés, Biotope s’est imposée au fil des années comme précurseur et leader mondial de l’ingénierie environnementale et de la…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	IVL Swedish Environmental Research Institute	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	201-500	519 contacts →
	Exact match “IVL Swedish Environmental Research Institute is an independent, non-profit research organisation owned by a foundation established by the Swedish government and industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Business In The Community	Exact match	London, United KingdomHQ recorded Nov 5, 2026	201-500	505 contacts →
	Exact match “Business in the Community (BITC) champions responsible business as essential for long term economic growth and resilience.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Sattva Consulting	Exact match	Bangalore, IndiaHQ recorded Nov 5, 2026	201-500	485 contacts →
	Exact match “At Sattva Consulting, we believe meaningful change happens when people come together with a shared purpose.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	SEI Stockholm Environment Institute	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	201-500	476 contacts →
	Exact match “Stockholm Environment Institute – bridging science, policy and practice We are an international non-profit research institute that tackles climate, environment and sustainable…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	ADP Consulting	Exact match	Melbourne, AustraliaHQ recorded Nov 5, 2026	201-500	472 contacts →
	Exact match “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	AESG	Exact match	London, United Arab EmiratesHQ recorded Nov 5, 2026	201-500	427 contacts →
	Exact match “AESG is an international Consultancy, Engineering and Advisory firm committed to driving sustainability in the built environment and beyond.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	WRI	Exact match	United StatesHQ recorded Nov 5, 2026	501-1,000	426 contacts →
	Exact match “WRI is a global research organization that turns big ideas into action at the nexus of environment, economic opportunity and human well-being.” Recorded in the RevenueBase company graph · Nov 5, 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 “sustainable development 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 25 of 19,079 sustainable development consultancies worldwide

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Sustainable development consultancies worldwide at a glance

As of Nov 5, 2026

33.3%Verified-email coverage

9.4Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

14,135

11-50

3,875

51-200

718

201-500

155

501-1,000

1,001-5,000

5,001-10,000

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 sustainable development consultancies are linked below.
What qualifies: Company records worldwide whose business descriptions match “sustainable development 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. 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 59,672 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 5, 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.

Sustainable development consultancies by location

132 lists · largest first

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

How many sustainable development consultancies are there worldwide?

RevenueBase identified 19,079 company matches for sustainable development consultancies 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?

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

Which country has the most sustainable development consultancies?

The United Kingdom leads with 1,527 companies, followed by Brazil (1,413) and the United States (1,259). Every sustainable development consultancies list by country and city is linked on this page.

Which city has the most sustainable development consultancies?

London leads with 539 company records, followed by Paris (289) and Sao Paulo (278).

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 59,672 professional contacts with verified work emails tracked across these 19,079 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 5, 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.