Company lists · Data refreshed September 2026

Top 24 Greenhouse consulting firms based in London, United Kingdom

Name: Greenhouse 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 101 companies tracked

RevenueBase identified 101 greenhouse consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 1,535 professional contacts across them, including 806 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers greenhouse consulting firms headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

101Companies

1,535Contacts tracked

806Verified emails

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The 24 largest greenhouse consulting firms based in London, United Kingdom

Ranked by team size

Top 24 of 101 greenhouse consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to greenhouse consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Atelier TEN	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	323 contacts →
	Indirect evidence “As environmental design consultants, building services engineers and lighting designers, we are committed to high performance and sustainable design within the built environment.” Source: RevenueBase Database · checked Sep 28, 2026
2	Longevity Partners	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	115 contacts →
	Indirect evidence “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
3	Xco2	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence “We are a multidisciplinary group with backgrounds in engineering, architecture and environmental science, working as consultants for buildings, large developments and masterplans…” Source: RevenueBase Database · checked Sep 28, 2026
4	Eight Versa	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “At Eight Versa, we deliver a new direction for a balanced future.” Source: RevenueBase Database · checked Sep 28, 2026
5	Envision	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “Envision is a specialist sustainability, energy and net zero design consultancy offering strategic and technical advice within the built environment and to businesses wishing to…” Source: RevenueBase Database · checked Sep 28, 2026
6	Integration	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “We’re helping to create a world where every building is truly zero carbon.” Source: RevenueBase Database · checked Sep 28, 2026
7	Robertsbridge	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Robertsbridge advises major companies as they navigate the increasingly complex intersection of sustainability, climate, nature, and geopolitics.” Source: RevenueBase Database · checked Sep 28, 2026
8	Edenseven	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	15 contacts →
	Indirect evidence “edenseven is a management consultancy firm that helps companies of all sizes achieve their sustainability goals and work towards net zero emissions.” Source: RevenueBase Database · checked Sep 28, 2026
9	JAW Sustainability	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “JAW are a dynamic sustainability consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
10	Atmos LAB	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “In a context where human impact is leaving a costly imprint on its homeland, Atmos Lab helps architecture face the environmental challenges of our time with built-in common sense.” Source: RevenueBase Database · checked Sep 28, 2026
11	BTP Consultants	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “We design mechanical and electrical systems, advise on all aspects of energy, carbon reduction and building physics.” Source: RevenueBase Database · checked Sep 28, 2026
12	Zerogram	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Zerogram is on a mission to make net zero not just possible, but practical.” Source: RevenueBase Database · checked Sep 28, 2026
13	Forstå Projects LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Welcome to our world of green certifications!” Source: RevenueBase Database · checked Sep 28, 2026
14	A Plus Consulting LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “A Plus Consulting are a multidisciplinary group of consultants with backgrounds in engineering services design, energy and building physics.” Source: RevenueBase Database · checked Sep 28, 2026
15	Iken Associates	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Since 2001 we've been delivering better climate, health, nature and sustainability outcomes for the public, private and not-for-profit sectors.” Source: RevenueBase Database · checked Sep 28, 2026
16	Smart Green Shift LTD Shift	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “We (Smart Green Shift Ltd) are a consulting firm that provides a wide range of services in net-zero carbon building design and Excellence in Design for Greater Efficiencies (EDGE)…” Source: RevenueBase Database · checked Sep 28, 2026
17	HA F Climate Design	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Ha/f is a climate design studio working at the intersection of the built environment, policy, and carbon.” Source: RevenueBase Database · checked Sep 28, 2026
18	Studio 4215	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Studio 4215 believes in the true integration of bioclimatic design into every architectural proposal.” Source: RevenueBase Database · checked Sep 28, 2026
19	NET Zero NOW	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Marie Claire Sustainability Technology Award Winner 2023.” Source: RevenueBase Database · checked Sep 28, 2026
20	Zed-Power LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “The ZED-Power team can offer consultancy in architecture, construction detailing and cost-effective delivery, product design, master planning, renewable energy and the development…” Source: RevenueBase Database · checked Sep 28, 2026
21	Zero Carbon Associates	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Zero Carbon Associates is a specialist talent and workforce partner supporting the global energy transition.” Source: RevenueBase Database · checked Sep 28, 2026
22	Radiuszero	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “RadiusZero, founded in 2018, is a specialist carbon consultancy helping organisations around the globe decarbonise and scale high-integrity natural capital and carbon projects.” Source: RevenueBase Database · checked Sep 28, 2026
23	LMC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “LMC is an international talent consultancy that is solely focused on the Climate Technology sector, connecting only the best talent across the globe with organisations driving…” Source: RevenueBase Database · checked Sep 28, 2026
24	ERCE	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	4 contacts →
	Partial evidence “As a global leader in energy consulting, ERCE is committed to supporting oil & gas, new energy types and efforts to decarbonise and reduce GHG emissions.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: greenhouse consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names greenhouse consulting firms.
Partial evidence: Its own public description names part of greenhouse consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name greenhouse consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 101 greenhouse consulting firms based in London, United Kingdom

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Greenhouse consulting firms based in London, United Kingdom at a glance

As of Sep 28, 2026

52.5%Verified-email coverage

15.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 101 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among greenhouse consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “greenhouse consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names greenhouse consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among greenhouse consulting firms, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 806 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names greenhouse consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 101 greenhouse consulting firms headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Atelier TEN, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most greenhouse consulting firms?

London leads the United Kingdom with 101 headquartered companies, followed by Manchester (13) and Leeds (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 806 verified decision-maker contacts tracked across these 101 companies.

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 Smart Search, 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.