Company lists · Data refreshed September 2026

Top 25 Energy consultancies based in the United Kingdom

Name: Energy consultancies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 4,264 companies tracked

RevenueBase identified 4,264 energy consultancies headquartered in the United Kingdom as of September 2026 and tracks 106,085 professional contacts across them, including 34,421 with verified work emails. London is the largest hub.

This list covers energy consultancies headquartered in the 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 21, 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 21, 2026 86% judged on-target in blind review

4,264Companies

106,085Contacts tracked

34,421Verified emails

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The 25 largest energy consultancies based in the United Kingdom

Ranked by team size

Top 25 of 4,264 energy consultancies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy consultancies: 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	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	10001+	26,949 contacts →
	Partial evidence “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Source: RevenueBase Database · checked Sep 21, 2026
2	British GAS	Indirect evidence	Windsor, United KingdomHQ checked Sep 21, 2026	10001+	9,238 contacts →
	Indirect evidence “Taking care of things.” Source: RevenueBase Database · checked Sep 21, 2026
3	Centrica	Partial evidence	Windsor, United KingdomHQ checked Sep 21, 2026	10001+	4,555 contacts →
	Partial evidence “Centrica is an international energy services and solutions company, founded on a 200-year heritage of serving customers in homes and businesses.” Source: RevenueBase Database · checked Sep 21, 2026
4	Shell Energy	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	2,627 contacts →
	Partial evidence “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Source: RevenueBase Database · checked Sep 21, 2026
5	Dalkia UK	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	1,064 contacts →
	Partial evidence “Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…” Source: RevenueBase Database · checked Sep 21, 2026
6	Aurora Energy Research	Partial evidence	Oxford, United KingdomHQ checked Sep 21, 2026	501-1,000	1,034 contacts →
	Partial evidence “Established in 2013, Aurora Energy Research is a leading global provider of power market forecasting and analytics for critical investment and financing decisions.” Source: RevenueBase Database · checked Sep 21, 2026
7	Penspen	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,007 contacts →
	Partial evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
8	KBR Granherne	Strong evidence	Leatherhead, United KingdomHQ checked Sep 21, 2026	501-1,000	648 contacts →
	Strong evidence “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
9	Dalcour Maclaren	Indirect evidence	Chesterton, United KingdomHQ checked Sep 21, 2026	501-1,000	589 contacts →
	Indirect evidence “Dalcour Maclaren: delivering land, stakeholder and environmental solutions.” Source: RevenueBase Database · checked Sep 21, 2026
10	XODUS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	201-500	520 contacts →
	Partial evidence “As a global energy consultancy, we unite our unique and diverse people to share knowledge, innovate and inspire change within the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
11	Northern GAS And Power	Partial evidence	Gateshead, United KingdomHQ checked Sep 21, 2026	501-1,000	509 contacts →
	Partial evidence “As leaders in our field, we’re trusted by over businesses to provide a full energy service.” Source: RevenueBase Database · checked Sep 21, 2026
12	Natural Power	Partial evidence	Castle Douglas, United KingdomHQ checked Sep 21, 2026	501-1,000	500 contacts →
	Partial evidence “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: RevenueBase Database · checked Sep 21, 2026
13	Fichtner Consulting Engineers LTD	Indirect evidence	Stockport, United KingdomHQ checked Sep 21, 2026	51-200	418 contacts →
	Indirect evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 21, 2026
14	Vysus Group	Indirect evidence	Westhill, United KingdomHQ checked Sep 21, 2026	51-200	415 contacts →
	Indirect evidence “Vysus Group is an engineering and technical consultancy, offering specialist asset performance, risk management and project management expertise across complex industrial assets…” Source: RevenueBase Database · checked Sep 21, 2026
15	Genesis	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	401 contacts →
	Partial evidence “Genesis is a market-leading advisory company focused on providing high-value technical and advisory services for the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
16	Inspired PLC	Partial evidence	Kirkham, United KingdomHQ checked Sep 21, 2026	501-1,000	373 contacts →
	Partial evidence “Inspired PLC is a leading technology-enabled provider of energy and sustainability solutions that allow UK and Irish businesses to transition to net-zero carbon and manage their…” Source: RevenueBase Database · checked Sep 21, 2026
17	Corona Energy	Partial evidence	Watford, United KingdomHQ checked Sep 21, 2026	51-200	331 contacts →
	Partial evidence “Welcome to Corona Energy – a leading independent energy supplier to UK businesses.” Source: RevenueBase Database · checked Sep 21, 2026
18	Atelier TEN	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
19	CPW	Indirect evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	201-500	317 contacts →
	Indirect evidence “Climate change is without a doubt the greatest challenge we face in these times.” Source: RevenueBase Database · checked Sep 21, 2026
20	EIC Partnership	Partial evidence	Redditch, United KingdomHQ checked Sep 21, 2026	51-200	316 contacts →
	Partial evidence “EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…” Source: RevenueBase Database · checked Sep 21, 2026
21	YU Energy	Partial evidence	Nottingham, United KingdomHQ checked Sep 21, 2026	51-200	273 contacts →
	Partial evidence “Yü Energy was built with a mission to shake up the UK business energy market, offering businesses innovative energy solutions that help save time and money.” Source: RevenueBase Database · checked Sep 21, 2026
22	Wardell Armstrong LLP NOW SLR	Indirect evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	501-1,000	253 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
23	Avantis	Partial evidence	Cardiff, United KingdomHQ checked Sep 21, 2026	501-1,000	213 contacts →
	Partial evidence “Avantis Group, based in the UK, is a global leader in energy and transportation.” Source: RevenueBase Database · checked Sep 21, 2026
24	E.On Control Solutions LTD	Partial evidence	Bury, United KingdomHQ checked Sep 21, 2026	201-500	206 contacts →
	Partial evidence “Who we are » The UK’s leading Energy Management company » Our aim is to increase energy performance within buildings » Deliver energy projects to maximise customer return on…” Source: RevenueBase Database · checked Sep 21, 2026
25	Inenco Group	Partial evidence	Lytham, United KingdomHQ checked Sep 21, 2026	501-1,000	190 contacts →
	Partial evidence “Inenco Group has been acquired by Sustainable Energy First.” Source: RevenueBase Database · checked Sep 21, 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: energy consultancies. 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 energy consultancies.
Partial evidence: Its own public description names part of energy consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy consultancies. 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 4,264 energy consultancies based in the United Kingdom

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Energy consultancies based in the United Kingdom at a glance

As of Sep 21, 2026

32.4%Verified-email coverage

24.9Average contacts per company

1-10Median size (employees)

19.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,773

11-50

1,097

51-200

265

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 4,264 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 energy consultancies, 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 the United Kingdom whose own description of what they do matches “energy consultancies”. 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 energy consultancies), 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 energy consultancies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 34,421 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 21, 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.

Energy consultancies by metro

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 energy consultancies, 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 energy consultancies are there based in the United Kingdom?

RevenueBase identified 4,264 energy consultancies headquartered in the 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?

WOOD, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most energy consultancies?

London leads with 833 headquartered companies, followed by Manchester (112) and Glasgow (71).

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 34,421 verified decision-maker contacts tracked across these 4,264 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 21, 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.