Company lists · Data verified August 2026

Top 25 Clean energy consultancy companies based in the United Kingdom

Name: Clean energy consultancy companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 2,597 companies tracked

There are 2,597 clean energy consultancy companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 66,343 professional contacts across them, including 23,838 with verified work emails and 7,561 with mobile numbers. London is the largest hub.

This list covers clean energy consultancy companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

2,597Companies

66,343Contacts tracked

23,838Verified emails

7,561Mobile numbers

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The 25 largest clean energy consultancy companies based in the United Kingdom

Ranked by team size

Top 25 of 2,597 clean energy consultancy companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	WOOD	Aberdeen	10001+	27,349	8,032
2	Ricardo PLC	London	1,001-5,000	680	290
3	Dalcour Maclaren	Chesterton	501-1,000	583	405
4	ADP Consulting	London	201-500	463	270
5	Good Energy	Chippenham	201-500	462	211
6	Fichtner Consulting Engineers LTD	Glasgow	51-200	418	112
7	Genesis	London	501-1,000	404	183
8	Inspired PLC	Kirkham	501-1,000	374	261
9	Doris Group	Great Yarmouth	501-1,000	360	192
10	Hydrock, NOW Stantec	Hale	501-1,000	357	156
11	CPW	Solihull Birmingham	201-500	317	200
12	H&z Management Consulting	London	501-1,000	287	153
13	YU Energy	Leicester	51-200	278	103
14	Wardell Armstrong LLP Part Of SLR	Edinburgh	501-1,000	253	131
15	Avantis	London	501-1,000	206	68
16	Inenco Group	Lytham	501-1,000	196	57
17	Landell Mills	Trowbridge	51-200	196	53
18	Peak Wind	Scotland	201-500	185	3
19	CFP Energy	London	201-500	177	95
20	Consultiv Utilities	Hebburn	201-500	156	116
21	LCP Delta	Edinburgh	201-500	136	97
22	AES	Enfield	201-500	112	1
23	The Green Energy Advice Bureau	Sunderland	51-200	98	39
24	Green CAT Renewables LTD	Biggar	51-200	80	56
25	Energise Energy Solutions	Doncaster	201-500	76	22

Showing 25 of 2,597 clean energy consultancy companies based in the United Kingdom

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Clean energy consultancy companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 596 HQs

7,561Contacts with mobile numbers

124Emails re-verified in last 30 days

Companies by employee count

1-10

1,629

11-50

725

51-200

155

201-500

501-1,000

1,001-5,000

10001+

Clean energy consultancy companies by metro

Metro	Companies
Clean energy consultancy companies in London	596
Clean energy consultancy companies in Manchester	74
Clean energy consultancy companies in Glasgow	51
Clean energy consultancy companies in Bristol	49
Clean energy consultancy companies in Edinburgh	45
Clean energy consultancy companies in Birmingham	33
Clean energy consultancy companies in Leeds	31

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean energy consultancy companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 124 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean energy consultancy companies are there based in the United Kingdom?

There are 2,597 clean energy consultancy companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

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 clean energy consultancy companies?

London leads with 596 headquartered companies, followed by Manchester (74) and Glasgow (51).

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 23,838 verified decision-maker contacts tracked across these 2,597 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.