Company lists · Data refreshed September 2026

Top 25 Energy and infrastructure law firms based in London, United Kingdom

Name: Energy and infrastructure law firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 356 companies tracked

RevenueBase identified 356 energy and infrastructure law firms headquartered in London, United Kingdom as of September 2026 and tracks 74,114 professional contacts across them, including 33,012 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers energy and infrastructure law firms headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

356Companies

74,114Contacts tracked

33,012Verified emails

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The 25 largest energy and infrastructure law firms based in London, United Kingdom

Ranked by team size

Top 25 of 356 energy and infrastructure law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy and infrastructure law 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	Linklaters	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	6,805 contacts →
	Partial evidence “Linklaters is a leading global law firm, supporting and investing in the future of our clients wherever they do business.” Source: RevenueBase Database · checked Sep 28, 2026
2	Freshfields	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	6,487 contacts →
	Partial evidence “Freshfields is a global firm with over 280 years’ experience of anticipating change, setting new standards and shaping the future of law.” Source: RevenueBase Database · checked Sep 28, 2026
3	LAW Firm	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	6,284 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
4	Clyde & CO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	5,079 contacts →
	Partial evidence “Clyde & Co is a leading global law firm, helping organisations successfully navigate risk and maximise opportunity in the sectors that underpin global trade and commercial…” Source: RevenueBase Database · checked Sep 28, 2026
5	Ashurst	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	4,611 contacts →
	Indirect evidence “Ashurst has combined with Perkins Coie to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 28, 2026
6	Eversheds Sutherland	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	3,981 contacts →
	Partial evidence “A pioneering global law practice, we provide high quality legal advice and innovation worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
7	Simmons & Simmons	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,498 contacts →
	Partial evidence “An international law firm that acts like your business partner.” Source: RevenueBase Database · checked Sep 28, 2026
8	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,951 contacts →
	Partial evidence “Slaughter and May is regarded as one of the most prestigious law firms in the world.” Source: RevenueBase Database · checked Sep 28, 2026
9	Fieldfisher	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,940 contacts →
	Partial evidence “Fieldfisher is an enterprising European law firm built around people.” Source: RevenueBase Database · checked Sep 28, 2026
10	Stephenson Harwood LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,474 contacts →
	Partial evidence “Stephenson Harwood is an international law firm, and we're committed to creating 'positive partnerships' with our clients.” Source: RevenueBase Database · checked Sep 28, 2026
11	Shoosmiths	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,444 contacts →
	Partial evidence “We’re the law firm clients choose for excellent service, incisive thinking and above all for our ability to focus on what matters.” Source: RevenueBase Database · checked Sep 28, 2026
12	HFW	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,406 contacts →
	Strong evidence “HFW is a leading global law firm in the aerospace, commodities, construction, energy, insurance, and shipping sectors.” Source: RevenueBase Database · checked Sep 28, 2026
13	Mishcon DE Reya LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,376 contacts →
	Indirect evidence “Based in London, Mishcon de Reya services an international community of clients and provides advice in situations where the constraints of geography often do not apply.” Source: RevenueBase Database · checked Sep 28, 2026
14	Watson Farley & Williams	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,331 contacts →
	Strong evidence “Watson Farley & Williams is a leading international law firm advising clients operating in the energy, infrastructure and transport sectors.” Source: RevenueBase Database · checked Sep 28, 2026
15	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
16	Taylor Rose	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,155 contacts →
	Partial evidence “Taylor Rose is a top 60 independent law firm with 1,700 experts operating nationwide and is recommended by the Legal 500 UK.” Source: RevenueBase Database · checked Sep 28, 2026
17	Trowers & Hamlins	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,113 contacts →
	Indirect evidence “Trowers & Hamlins is well known for its eclectic mix of specialisations combining sector leadership in the UK and across the Middle East and Asia.” Source: RevenueBase Database · checked Sep 28, 2026
18	Winckworth Sherwood LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	360 contacts →
	Partial evidence “A full service law firm with a diverse client base, Winckworth Sherwood prides itself on providing market leading advice across a broad range of sectors and markets.” Source: RevenueBase Database · checked Sep 28, 2026
19	Bristows	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	354 contacts →
	Indirect evidence “We are a European headquartered hub for litigation, transactions and advice throughout the world and have remained fiercely independent since we first began in 1837.” Source: RevenueBase Database · checked Sep 28, 2026
20	FOX Williams	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	223 contacts →
	Partial evidence “Fox Williams is a leading law firm based in the City of London, trusted by its clients to provide quality advice with a high level of partner involvement and an astute commercial…” Source: RevenueBase Database · checked Sep 28, 2026
21	39 Essex Chambers	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	212 contacts →
	Partial evidence “39 Essex Chambers is a leading set offering expertise in civil liability, commercial, construction, costs & litigation funding, energy, environmental, planning, property, public…” Source: RevenueBase Database · checked Sep 28, 2026
22	Beale & CO	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	205 contacts →
	Partial evidence “Originally founded in 1838 we have over 180 years’ experience providing specialist legal advice to the construction, engineering, infrastructure and insurance sectors.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sharpe Pritchard Solicitors & Parliamentary Agents	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	149 contacts →
	Indirect evidence “Commitment.” Source: RevenueBase Database · checked Sep 28, 2026
24	Signature Litigation	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	146 contacts →
	Partial evidence “Signature Litigation is a London-based law firm with offices in Paris, Gibraltar and Frankfurt, specialising in commercial litigation and arbitration.” Source: RevenueBase Database · checked Sep 28, 2026
25	Healys LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	134 contacts →
	Partial evidence “Healys is a leading UK law firm with international reach.” Source: RevenueBase Database · checked Sep 28, 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 and infrastructure law 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 energy and infrastructure law firms.
Partial evidence: Its own public description names part of energy and infrastructure law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy and infrastructure law 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 356 energy and infrastructure law firms based in London, United Kingdom

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Energy and infrastructure law firms based in London, United Kingdom at a glance

As of Sep 28, 2026

44.5%Verified-email coverage

208.2Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

163

11-50

116

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 356 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 and infrastructure law 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 London, United Kingdom whose own description of what they do matches “energy and infrastructure law 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 energy and infrastructure law 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 energy and infrastructure law firms, and records with no verified work email. Companies headquartered outside London 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, 33,012 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 28, 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 energy and infrastructure law 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 energy and infrastructure law firms are there based in London, United Kingdom?

RevenueBase identified 356 energy and infrastructure law firms headquartered in London, 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?

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

Which city in the United Kingdom has the most energy and infrastructure law firms?

London leads the United Kingdom with 356 headquartered companies, followed by Bristol (20) and Manchester (20).

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 33,012 verified decision-maker contacts tracked across these 356 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 28, 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.