Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in London, United Kingdom

Name: Geothermal consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 221 companies tracked

RevenueBase identified 221 geothermal consultants headquartered in London, United Kingdom as of September 2026 and tracks 3,658 professional contacts across them, including 1,729 with verified work emails. London is the largest hub.

This list covers geothermal consultants 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 19, 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 19, 2026 86% judged on-target in blind review

221Companies

3,658Contacts tracked

1,729Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geothermal consultants based in London, United Kingdom

Ranked by team size

Top 25 of 221 geothermal consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: 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	Hoare LEA	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	1,103 contacts →
	Partial evidence “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Source: RevenueBase Database · checked Sep 19, 2026
2	Atelier TEN	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	323 contacts →
	Partial 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 19, 2026
3	OWC	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	185 contacts →
	Partial evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 19, 2026
4	Wood Thilsted	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	175 contacts →
	Partial evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 19, 2026
5	JD Ross Energy	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	143 contacts →
	Partial evidence “JD Ross Energy is an international talent consultancy that solely focuses on the Renewable Energy sector, connecting the best talent across the globe with companies that are…” Source: RevenueBase Database · checked Sep 19, 2026
6	WALSH	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	110 contacts →
	Partial evidence “Walsh is a B Corp Certified structural, civil and geotechnical engineering consultancy specialising in complex developments on constrained urban sites.” Source: RevenueBase Database · checked Sep 19, 2026
7	GER Consultancy	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	n/a	102 contacts →
	Partial evidence “GER Consultancy specialises in the selection and provision of qualified and experienced engineering and technical personnel to clients within the Steel, Power Generation and Oil &…” Source: RevenueBase Database · checked Sep 19, 2026
8	Alfa Energy An Edison Energy Company	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	88 contacts →
	Partial evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 19, 2026
9	Rendesco	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Source: RevenueBase Database · checked Sep 19, 2026
10	Banyards	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “We are a specialist consultancy business delivering mechanical and electrical design and commissioning consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
11	Qoda Consulting	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “Welcome to QODA: working hard to meet the needs of our clients and all those who use the buildings we help to create.” Source: RevenueBase Database · checked Sep 19, 2026
12	OPC	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “OPC is a leading global energy consultancy specialising in providing clients with top-tier expertise and innovative solutions across the upstream E&P, Gas and CO2 storage domains…” Source: RevenueBase Database · checked Sep 19, 2026
13	AVA Energy	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “AVA Energy – Powering Energy Talent.” Source: RevenueBase Database · checked Sep 19, 2026
14	Skelly & Couch	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Skelly & Couch is a leading environmental engineering practice with offices in London, Bristol, and Newcastle.” Source: RevenueBase Database · checked Sep 19, 2026
15	DSA Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “DSA Engineering is an engineering design consultancy with extensive experience in providing innovative multi-disciplinary engineering services.” Source: RevenueBase Database · checked Sep 19, 2026
16	Geotechnical Consulting Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Geotechnical Consulting Group (GCG) is one of the world’s leading independent geotechnical engineering consultancies, recognised for delivering innovative, research driven…” Source: RevenueBase Database · checked Sep 19, 2026
17	Geowynd	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Data-driven geosolutions to ensure ground risks are mitigated and design opportunities are realised.” Source: RevenueBase Database · checked Sep 19, 2026
18	M.P.E. Power System Consultants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “M.P.E.” Source: RevenueBase Database · checked Sep 19, 2026
19	Taylor Project Services LLP	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Taylor Project Services LLP (TPS) are qualified CIBSE Building Services + Energy/Sustainability Engineers specialising in the Design and Specification of Mechanical, Electrical…” Source: RevenueBase Database · checked Sep 19, 2026
20	Turner Lovell	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “EXECUTIVE SEARCH & PROJECT RESOURCES FOR THE ENERGY TRANSITION, ELECTRICITY, AND RENEWABLE ENERGY - RECRUITMENT WITH PURPOSE Turner Lovell are an international talent consultancy…” Source: RevenueBase Database · checked Sep 19, 2026
21	Kinekta	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “We’re a team of successful senior renewable energy recruiters, who champion change for a greener future.” Source: RevenueBase Database · checked Sep 19, 2026
22	Bedi Consulting LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Bedi Consulting offer specialist geotechnical and tunnel engineering consultancy services from design conception through to construction.” Source: RevenueBase Database · checked Sep 19, 2026
23	Lamorbey Associates	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Lamorbey Associates is a practice of Consultant Building Services Engineers.” Source: RevenueBase Database · checked Sep 19, 2026
24	Future Energy Partners	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Partial evidence “ENERGY TRANSITION We provide clean energy options and practical solutions for our clients, and pride ourselves in being a consultancy that is dedicated to delivering today’s…” Source: RevenueBase Database · checked Sep 19, 2026
25	Atmos LAB	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 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: geothermal consultants. 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 geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. 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 25 of 221 geothermal consultants based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,729 reachable decision-makers.

Free signup · no credit card

View the full list →

Geothermal consultants based in London, United Kingdom at a glance

As of Sep 19, 2026

47.3%Verified-email coverage

16.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

147

11-50

51-200

201-500

501-1,000

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 221 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 geothermal consultants, 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 “geothermal consultants”. 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 geothermal consultants), 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 geothermal consultants, 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, 1,729 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 19, 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.

Geothermal consultants by metro in the United Kingdom

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 geothermal consultants, 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 geothermal consultants are there based in London, United Kingdom?

RevenueBase identified 221 geothermal consultants 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?

Hoare LEA, headquartered in London, tops this list with the largest team on record.

Which city has the most geothermal consultants?

London leads with 221 headquartered companies, followed by Aberdeen (42) and Manchester (30).

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 1,729 verified decision-maker contacts tracked across these 221 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 221 geothermal consultants based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Geothermal consultants by geography

Browse the directory

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.