Company lists · Data refreshed September 2026

Top 25 Project finance law firms based in London, United Kingdom

Name: Project finance 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 13, 2026 94 companies tracked

RevenueBase identified 94 project finance law firms headquartered in London, United Kingdom as of September 2026 and tracks 4,387 professional contacts across them, including 2,531 with verified work emails and 222 with mobile numbers. London is the largest hub.

This list covers project finance 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 13, 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 13, 2026 86% judged on-target in blind review

94Companies

4,387Contacts tracked

2,531Verified emails

222Mobile numbers

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The 25 largest project finance law firms based in London, United Kingdom

Ranked by team size

Top 25 of 94 project finance law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to project finance 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	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
2	Watson Farley & Williams	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	1,331 contacts →
	Partial 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 13, 2026
3	Beale & CO	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	205 contacts →
	Indirect 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 13, 2026
4	Fenwick Elliott LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	92 contacts →
	Indirect evidence “We advise on every aspect of the construction process from inception through building to completion and operation.” Source: RevenueBase Database · checked Sep 13, 2026
5	Trinity International	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	79 contacts →
	Strong evidence “Trinity International LLP is a niche project and corporate finance law firm focusing on energy, infrastructure, resources and industry with offices in London, Paris, Washington DC…” Source: RevenueBase Database · checked Sep 13, 2026
6	K&l Gates LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	63 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
7	Ashurst LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	53 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
8	Rosling King LLP	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	45 contacts →
	Strong evidence “Rosling King is a rapidly growing UK-based law firm specialising in serving the needs of financial institutions and the real estate, private equity and construction sectors.” Source: RevenueBase Database · checked Sep 13, 2026
9	Amberside Advisors	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	44 contacts →
	Strong evidence “Amberside Advisors is an independent consultancy providing financial and commercial advice to low carbon energy, infrastructure and public sector projects.” Source: RevenueBase Database · checked Sep 13, 2026
10	Rosenblatt LAW	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Partial evidence “Rosenblatt Law - the experts you come to with an opportunity to seize or an issue to solve.” Source: RevenueBase Database · checked Sep 13, 2026
11	Mayer Brown International LLP	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	27 contacts →
	Strong evidence “Mayer Brown is a distinctively global law firm, uniquely positioned to advise the world’s leading companies and financial institutions on their most complex deals and disputes.” Source: RevenueBase Database · checked Sep 13, 2026
12	Evolution Infrastructure	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	25 contacts →
	Partial evidence “We are a specialist financial consultancy consisting of over 20 professional staff based in London, UK.” Source: RevenueBase Database · checked Sep 13, 2026
13	Complete Projects	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	19 contacts →
	Strong evidence “Founded in 2008, Complete Projects is a talented, friendly team of project, programme, legal, finance, IT and other professionals.” Source: RevenueBase Database · checked Sep 13, 2026
14	Newbridge Advisors LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Indirect evidence “Newbridge Advisors was founded in 2012.” Source: RevenueBase Database · checked Sep 13, 2026
15	Prospect LAW	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Partial evidence “Prospect Law is a UK regulated law firm with specialist expertise advising on renewable and nuclear energy sectors.” Source: RevenueBase Database · checked Sep 13, 2026
16	Portland Advisers	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Strong evidence “Portland Advisers is your partner in developing solutions for the financial structuring requirements of resources, energy transition, infrastructure, and telecoms projects…” Source: RevenueBase Database · checked Sep 13, 2026
17	Global Infrastructure Advisors	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Partial evidence “Global Infrastructure Advisors (GIA) is a leading infrastructure advisory firm, offering strategic and financial guidance to clients in the energy and infrastructure sectors.” Source: RevenueBase Database · checked Sep 13, 2026
18	Altra Capital	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Indirect evidence “We are global consulting firm of leading experts from the UK and international infrastructure and markets.” Source: RevenueBase Database · checked Sep 13, 2026
19	Alderbrook Finance	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	12 contacts →
	Strong evidence “Alderbrook Finance provides bespoke project finance advisory services to both corporate and public sector entities with exceptional track record in the Renewable, Power and…” Source: RevenueBase Database · checked Sep 13, 2026
20	Asteros Advisers	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Partial evidence “Asteros Advisers is a specialist infrastructure advisory company, with experience supporting clean energy projects from inception to the end of procurement.” Source: RevenueBase Database · checked Sep 13, 2026
21	Freedman Hilmi	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Strong evidence “Freedman + Hilmi is a specialist property and financing law firm advising on all aspects of real estate and corporate finance transactions, particularly complex commercial…” Source: RevenueBase Database · checked Sep 13, 2026
22	LUX Nova Partners LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Partial evidence “Lux Nova Partners is a unique kind of law firm.” Source: RevenueBase Database · checked Sep 13, 2026
23	Fieldfisher Condor	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	8 contacts →
	Partial evidence “Innovative, flexible and cost-effective; Fieldfisher Condor is a unique alternative legal solutions business that combines the power of technology, legal expertise and project…” Source: RevenueBase Database · checked Sep 13, 2026
24	Maycap Advisors	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Strong evidence “Project, Export and Structured financing Solutions for Energy & Infrastructure development.” Source: RevenueBase Database · checked Sep 13, 2026
25	Infrasia Capital	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Partial evidence “Infrasia Capital is a London based infrastructure advisory firm specialising in projects in Central Asia.” Source: RevenueBase Database · checked Sep 13, 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: project finance 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 project finance law firms.
Partial evidence: Its own public description names part of project finance law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name project finance 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 94 project finance law firms based in London, United Kingdom

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Project finance law firms based in London, United Kingdom at a glance

As of Sep 13, 2026

57.7%Verified-email coverage

5.1%Mobile-number coverage

46.7Average contacts per company

1-10Median size (employees)

296.8%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 15.0d

1,9920–30

51031–60

961–90

290–180

18180+

Company record updated

Median 64.0d

00–30

2,05831–60

1,68261–90

39190–180

256180+

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 project finance 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 “project finance 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 project finance 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 project finance 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, 2,531 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 13, 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.

Project finance law firms by metro in the United Kingdom

Project finance law firms in London279

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 project finance 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 project finance law firms are there based in London, United Kingdom?

RevenueBase identified 94 project finance 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?

Slaughter And MAY, headquartered in London, tops this list with the largest team on record.

Which city has the most project finance law firms?

London leads with 279 headquartered companies, followed by Bristol (16) and Belfast (11).

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 2,531 verified decision-maker contacts tracked across these 94 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 13, 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.