Company lists · Data verified August 2026

Top 25 Energy consulting firms based in the United Kingdom

Name: Energy consulting firms 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 1,470 companies tracked

There are 1,470 energy consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 71,647 professional contacts across them, including 19,001 with verified work emails and 7,265 with mobile numbers. London is the largest hub.

This list covers energy consulting firms 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.

1,470Companies

71,647Contacts tracked

19,001Verified emails

7,265Mobile numbers

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The 25 largest energy consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 1,470 energy consulting firms 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	British GAS	Staines	10001+	9,287	2,729
3	Shell Energy	London	1,001-5,000	2,642	581
4	Dalkia UK	Staines-Upon-Thames	1,001-5,000	1,054	753
5	Northern GAS And Power	Gateshead Gateshead Quays	501-1,000	505	279
6	Fichtner Consulting Engineers LTD	Glasgow	51-200	418	112
7	Genesis	London	501-1,000	404	183
8	Doris Group	Great Yarmouth	501-1,000	360	192
9	Avantis	London	501-1,000	206	68
10	E.On Control Solutions LTD	n/a	201-500	205	146
11	Peak Wind	Scotland	201-500	185	3
12	CFP Energy	London	201-500	177	95
13	Consultiv Utilities	Hebburn	201-500	156	116
14	LCP Delta	Edinburgh	201-500	136	97
15	Consultus	Rochford	51-200	127	106
16	Tritility	Jarrow	51-200	122	88
17	The Green Energy Advice Bureau	Sunderland	51-200	98	39
18	Haven Power	Ipswich	201-500	98	18
19	Sustainable Advantage	London	51-200	88	55
20	Team Energy Auditing Agency LTD	Milton Keynes	51-200	70	31
21	Omnia Projects	Northallerton	51-200	67	40
22	Direct Business Solutions	Houghton Le Spring	51-200	66	56
23	Cenergist	Washington	201-500	63	35
24	BFY Group	Nottingham	51-200	62	51
25	RSP Consulting Engineers	Aberdeen	51-200	60	19

Showing 25 of 1,470 energy consulting firms based in the United Kingdom

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Energy consulting firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 273 HQs

7,265Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

902

11-50

424

51-200

201-500

501-1,000

1,001-5,000

10001+

Energy consulting firms by metro

Metro	Companies
Energy consulting firms in London	273
Energy consulting firms in Manchester	38
Energy consulting firms in Glasgow	25
Energy consulting firms in Bristol	23
Energy consulting firms in Nottingham	22
Energy consulting firms in Edinburgh	22
Energy consulting firms in Leicester	21

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 “energy consulting firms”, 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; 0 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 energy consulting firms are there based in the United Kingdom?

There are 1,470 energy consulting firms 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 energy consulting firms?

London leads with 273 headquartered companies, followed by Manchester (38) and Glasgow (25).

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 19,001 verified decision-maker contacts tracked across these 1,470 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.