Company lists · Data refreshed September 2026

Top 25 Electrical engineering consulting firms based in the United Kingdom

Name: Electrical engineering consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 2,691 companies tracked

RevenueBase identified 2,691 electrical engineering consulting firms headquartered in the United Kingdom as of September 2026 and tracks 21,623 professional contacts across them, including 7,771 with verified work emails and 1,005 with mobile numbers. London is the largest hub.

This list covers electrical engineering 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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 29, 2026 86% judged on-target in blind review

2,691Companies

21,623Contacts tracked

7,771Verified emails

1,005Mobile numbers

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The 25 largest electrical engineering consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 2,691 electrical engineering consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to electrical engineering 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	Hoare LEA	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
2	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,007 contacts →
	Indirect evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
3	Fairhurst	Partial evidence	Glasgow, United KingdomHQ checked Sep 29, 2026	201-500	437 contacts →
	Partial evidence “Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.” Source: RevenueBase Database · checked Sep 29, 2026
4	Fichtner Consulting Engineers LTD	Partial evidence	Stockport, United KingdomHQ checked Sep 29, 2026	51-200	418 contacts →
	Partial evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 29, 2026
5	Brush Group	Indirect evidence	Loughborough, United KingdomHQ checked Sep 29, 2026	501-1,000	367 contacts →
	Indirect evidence “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Source: RevenueBase Database · checked Sep 29, 2026
6	Actemium UK	Strong evidence	Birmingham, United KingdomHQ checked Sep 29, 2026	501-1,000	190 contacts →
	Strong evidence “At Actemium UK, we are expert electrical, automation and mechanical engineers delivering bespoke engineering solutions across industry, infrastructure and beyond.” Source: RevenueBase Database · checked Sep 29, 2026
7	Z-Tech Control Systems LTD	Indirect evidence	Swavesey, United KingdomHQ checked Sep 29, 2026	201-500	156 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
8	Harley Haddow	Strong evidence	Edinburgh, United KingdomHQ checked Sep 29, 2026	51-200	146 contacts →
	Strong evidence “Harley Haddow are Civil, Structural, Mechanical, Electrical, Building Performance & Sustainability and Geotechnical Consulting Engineers.” Source: RevenueBase Database · checked Sep 29, 2026
9	Meinhardt UK And Ireland	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	133 contacts →
	Partial evidence “Meinhardt (UK) is a leading international multidisciplinary engineering consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
10	Powersystems	Indirect evidence	Bristol, United KingdomHQ checked Sep 29, 2026	51-200	126 contacts →
	Indirect evidence “Powered by People.” Source: RevenueBase Database · checked Sep 29, 2026
11	Swann Engineering Group LTD	Partial evidence	Braintree, United KingdomHQ checked Sep 29, 2026	51-200	123 contacts →
	Partial evidence “About Swann Engineering Group Founded in 1974, Swann Engineering Group specializes in delivering turnkey solutions for complex engineering challenges.” Source: RevenueBase Database · checked Sep 29, 2026
12	Brookbanks	Strong evidence	United KingdomHQ checked Sep 29, 2026	51-200	113 contacts →
	Strong evidence “Project Consultant & Development Partner: Civil, Structural, Mechanical & Electrical Engineering Designs; Highways, Transportation & Environmental; Cost & Commercial & Development…” Source: RevenueBase Database · checked Sep 29, 2026
13	Darke & Taylor LTD	Indirect evidence	Oxfordshire, United KingdomHQ checked Sep 29, 2026	51-200	112 contacts →
	Indirect evidence “Our mission is to excel in the design, installation and maintenance of the electro-technical systems that connect to create fit for purpose building environments.” Source: RevenueBase Database · checked Sep 29, 2026
14	Rock Power Connections LTD	Partial evidence	Bromsgrove, United KingdomHQ checked Sep 29, 2026	51-200	105 contacts →
	Partial evidence “Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Source: RevenueBase Database · checked Sep 29, 2026
15	GGP Consult	Strong evidence	Hull, United KingdomHQ checked Sep 29, 2026	51-200	91 contacts →
	Strong evidence “GGP Consult is a privately-owned multidisciplinary Consulting Engineering Company which was established in 1994.” Source: RevenueBase Database · checked Sep 29, 2026
16	NARRO	Partial evidence	Edinburgh, United KingdomHQ checked Sep 29, 2026	51-200	89 contacts →
	Partial evidence “Narro is a team of Consulting Structural & Civil Engineers with offices in Edinburgh, Glasgow, Stirling, Inverness, Aberdeen, Newcastle, and London.” Source: RevenueBase Database · checked Sep 29, 2026
17	Services Design Solution SDS	Strong evidence	South West, United KingdomHQ checked Sep 29, 2026	51-200	87 contacts →
	Strong evidence “SDS is a forward-looking, dynamic construction consultancy specialising in the design of sustainable, mechanical and electrical engineering systems for buildings.” Source: RevenueBase Database · checked Sep 29, 2026
18	DDD Design LTD	Indirect evidence	Kent, United KingdomHQ checked Sep 29, 2026	n/a	87 contacts →
	Indirect evidence “About us Our lighting design team in the Southeast of England has over 38 years of experience within the lighting industry, with a range of early backgrounds within product…” Source: RevenueBase Database · checked Sep 29, 2026
19	AKD	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 29, 2026	51-200	79 contacts →
	Indirect evidence “AKD’s clients get quick results, normally leading to reduced costs and gaining an improved service.” Source: RevenueBase Database · checked Sep 29, 2026
20	Acorn Engineering Limited	Strong evidence	Slough, United KingdomHQ checked Sep 29, 2026	51-200	78 contacts →
	Strong evidence “With over 40 years’ experience in our industry, we are experts in the specialist area of mechanical and electrical engineering.” Source: RevenueBase Database · checked Sep 29, 2026
21	Will Rudd	Partial evidence	Edinburgh, United KingdomHQ checked Sep 29, 2026	51-200	77 contacts →
	Partial evidence “Will Rudd are Consulting Civil & Structural Engineers with an excellent track record in delivering a quality product.” Source: RevenueBase Database · checked Sep 29, 2026
22	Global Substation Solutions LTD	Partial evidence	Hebburn, United KingdomHQ checked Sep 29, 2026	51-200	75 contacts →
	Partial evidence “Established in 2006, Global Substation Solutions Ltd (GSS) are a dynamic power system engineering company, providing turnkey project services to the UK and international…” Source: RevenueBase Database · checked Sep 29, 2026
23	Delap & Waller	Partial evidence	Antrim /, United KingdomHQ checked Sep 29, 2026	51-200	73 contacts →
	Partial evidence “Delap & Waller Mechanical and Electrical Building Services Engineers was founded in 1911, and to this day we remain a leader in the field of Mechanical and Electrical Building…” Source: RevenueBase Database · checked Sep 29, 2026
24	Anderson Green LTD	Indirect evidence	Nottingham, United KingdomHQ checked Sep 29, 2026	51-200	70 contacts →
	Indirect evidence “Anderson Green are one of the largest privately owned consultancies in the UK.” Source: RevenueBase Database · checked Sep 29, 2026
25	Omnia Projects	Partial evidence	Northallerton, United KingdomHQ checked Sep 29, 2026	51-200	68 contacts →
	Partial evidence “Omnia Projects are an Engineering Consultancy providing multidisciplinary expertise for energy projects providing a complete service from feasibility and concept development…” Source: RevenueBase Database · checked Sep 29, 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: electrical engineering 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 electrical engineering consulting firms.
Partial evidence: Its own public description names part of electrical engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical engineering 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 25 of 2,691 electrical engineering consulting firms based in the United Kingdom

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Electrical engineering consulting firms based in the United Kingdom at a glance

As of Sep 29, 2026

35.9%Verified-email coverage

4.6%Mobile-number coverage

8.0Average contacts per company

1-10Median size (employees)

8.6%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,643

11-50

846

51-200

142

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

4,3160–30

5,54731–60

34661–90

290–180

19180+

Company record updated

Median 95.0d

00–30

1,23631–60

10,60561–90

14,52590–180

1,437180+

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 electrical engineering 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 the United Kingdom whose own description of what they do matches “electrical engineering 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 electrical engineering 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 electrical engineering consulting firms, 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, 7,771 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 29, 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.

Electrical engineering consulting firms 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 electrical engineering 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 electrical engineering consulting firms are there based in the United Kingdom?

RevenueBase identified 2,691 electrical engineering consulting firms 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?

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

Which city has the most electrical engineering consulting firms?

London leads with 231 headquartered companies, followed by Manchester (55) and Bristol (40).

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 7,771 verified decision-maker contacts tracked across these 2,691 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 29, 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.