Company lists · Data refreshed September 2026

Top 25 Electrical infrastructure consulting firms based in the United Kingdom

Name: Electrical infrastructure 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 4,362 companies tracked

RevenueBase identified 4,362 electrical infrastructure consulting firms headquartered in the United Kingdom as of September 2026 and tracks 98,134 professional contacts across them, including 27,635 with verified work emails. London is the largest hub.

This list covers electrical infrastructure 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

4,362Companies

98,134Contacts tracked

27,635Verified emails

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

Ranked by team size

Top 25 of 4,362 electrical infrastructure 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 infrastructure 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	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 29, 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 29, 2026
2	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 29, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 29, 2026
3	OCU	Partial evidence	Stockport, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,578 contacts →
	Partial evidence “OCU provides end-to-end infrastructure engineering in the utilities, digital, and energy markets, specialising in safely and efficiently delivering complex client requirements.” Source: RevenueBase Database · checked Sep 29, 2026
4	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 29, 2026
5	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,053 contacts →
	Indirect evidence “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Source: RevenueBase Database · checked Sep 29, 2026
6	Penspen	Partial evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
7	RED Engineering Design	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	785 contacts →
	Partial evidence “RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Source: RevenueBase Database · checked Sep 29, 2026
8	Freedom	Indirect evidence	Leeds, United KingdomHQ checked Sep 29, 2026	1,001-5,000	664 contacts →
	Indirect evidence “Freedom is a leading provider of facilities and power engineering services.” Source: RevenueBase Database · checked Sep 29, 2026
9	Pd&ms Group	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	501-1,000	653 contacts →
	Indirect evidence “PD & MS Group has full multi-discipline in-house EPCC capability and is recognised as a provider of safe, effective, and cost efficient design and engineering services to onshore…” Source: RevenueBase Database · checked Sep 29, 2026
10	Dalcour Maclaren	Indirect evidence	Chesterton, United KingdomHQ checked Sep 29, 2026	501-1,000	589 contacts →
	Indirect evidence “Dalcour Maclaren: delivering land, stakeholder and environmental solutions.” Source: RevenueBase Database · checked Sep 29, 2026
11	Aureos	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	583 contacts →
	Indirect evidence “Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…” Source: RevenueBase Database · checked Sep 29, 2026
12	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
13	Fichtner Consulting Engineers LTD	Indirect evidence	Stockport, United KingdomHQ checked Sep 29, 2026	51-200	418 contacts →
	Indirect evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 29, 2026
14	Quartzelec Limited	Partial evidence	Rugby, United KingdomHQ checked Sep 29, 2026	501-1,000	412 contacts →
	Partial evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 29, 2026
15	Genesis	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	401 contacts →
	Indirect 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 29, 2026
16	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
17	SPL Powerlines Uk&i	Partial evidence	Coatbridge, United KingdomHQ checked Sep 29, 2026	501-1,000	337 contacts →
	Partial evidence “SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…” Source: RevenueBase Database · checked Sep 29, 2026
18	VVB Engineering	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	336 contacts →
	Strong evidence “At VVB, we deliver mechanical, electrical, telecommunication, temporaries and fire engineering expertise and services for large-scale infrastructure projects.” Source: RevenueBase Database · checked Sep 29, 2026
19	EA Technology	Partial evidence	Chester, United KingdomHQ checked Sep 29, 2026	201-500	317 contacts →
	Partial evidence “EA Technology provide innovative solutions for smarter planning, operations and investment decisions across electrical networks globally.” Source: RevenueBase Database · checked Sep 29, 2026
20	EIC Partnership	Indirect evidence	Redditch, United KingdomHQ checked Sep 29, 2026	51-200	316 contacts →
	Indirect 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 29, 2026
21	Intec Energy Solutions	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	242 contacts →
	Indirect evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 29, 2026
22	Sudlows	Partial evidence	Manchester, United KingdomHQ checked Sep 29, 2026	201-500	228 contacts →
	Partial evidence “Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Source: RevenueBase Database · checked Sep 29, 2026
23	SKN	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	201-500	224 contacts →
	Indirect evidence “SKN specialise in providing competent technical personnel to carry out engineering solutions from concept to completion in the design, supply, installation, commissioning…” Source: RevenueBase Database · checked Sep 29, 2026
24	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
25	IQA Elecnor	Strong evidence	Glasgow, United KingdomHQ checked Sep 29, 2026	201-500	184 contacts →
	Strong evidence “IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…” 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 infrastructure 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 infrastructure consulting firms.
Partial evidence: Its own public description names part of electrical infrastructure 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 infrastructure 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 4,362 electrical infrastructure consulting firms based in the United Kingdom

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

As of Sep 29, 2026

28.2%Verified-email coverage

22.5Average contacts per company

1-10Median size (employees)

9.9%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,509

11-50

1,403

51-200

297

201-500

501-1,000

1,001-5,000

10001+

Email recency is not reported for this list. Company counts and contact totals on this page are counted from the 4,362 companies this search returned, because the overall count for this search did not match them.

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 infrastructure 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 infrastructure 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 infrastructure 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 infrastructure 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, 27,635 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.

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 infrastructure 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 infrastructure consulting firms are there based in the United Kingdom?

RevenueBase identified 4,362 electrical infrastructure 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?

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

Which city has the most electrical infrastructure consulting firms?

London leads with 430 headquartered companies, followed by Manchester (90) and Bristol (52).

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 27,635 verified decision-maker contacts tracked across these 4,362 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.