Company lists · Data refreshed September 2026

Top 25 Hydrogen energy consultants based in the United Kingdom

RevenueBase identified 84 company matches for hydrogen energy consultants associated with the United Kingdom as of September 2026 and tracks 891 professional contacts across them, including 495 with verified work emails. London is the largest hub.

This list covers company matches for hydrogen energy consultants associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
84Companies
891Contacts tracked
495Verified emails
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The 25 largest hydrogen energy consultants based in the United Kingdom

Ranked by team size
Top 25 of 84 company matches for hydrogen energy consultants based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200185 contacts →

Exact match

“The Renewable Energy Consultants.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchNewcastle, United KingdomHQ recorded Sep 21, 202651-200137 contacts →

Exact match

“GeoPura has a totally zero emissions answer to how we’re going to generate and distribute the vast amount of energy required to decarbonise our global economies.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchBristol, United KingdomHQ recorded Sep 21, 202651-200100 contacts →

Exact match

“Everoze is an employee-owned renewables, green hydrogen and storage consultancy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5047 contacts →

Exact match

“AVA Energy – Powering Energy Talent.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchOxford, United KingdomHQ recorded Sep 21, 202651-20033 contacts →

Exact match

“Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchEdinburgh, United KingdomHQ recorded Sep 21, 202611-5030 contacts →

Exact match

“Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5027 contacts →

Exact match

“The energy transition is gaining momentum but needs to accelerate to meet the challenges posed by the climate emergency.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchEdinburgh, United KingdomHQ recorded Sep 21, 202611-5024 contacts →

Exact match

“Green Cat Hydrogen develops green hydrogen projects.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5021 contacts →

Exact match

“Accelerating the hydrogen transition through actionable insights and networking.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLeeds, United KingdomHQ recorded Sep 21, 202611-5016 contacts →

Exact match

“At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchFareham, United KingdomHQ recorded Sep 21, 202611-5015 contacts →

Exact match

“Ecomar makes designs and consults on marine and industrial energy systems.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5012 contacts →

Exact match

“We provide unrivalled access, insight, and a human capital competitive advantage to industry leaders and pioneers across global Gas, LNG and Hydrogen industries advancing the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-1012 contacts →

Exact match

“We're a hydrogen-specialist political strategy and communications agency.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-108 contacts →

Exact match

“Delta H is a consultancy dedicated to accelerating the transition to zero carbon energy systems.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchCrowthorne, United KingdomHQ recorded Sep 21, 20261-107 contacts →

Exact match

“HyEnergy is a consultancy specialising in the pulling together of the disparate hydrogen and energy communities to foster, deliver and understand opportunities for new technical…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-107 contacts →

Exact match

“Kuungana Advisory is a consulting firm providing energy economics and commercial advisory services to public sector and private sector actors in the energy sector.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchTruro, United KingdomHQ recorded Sep 21, 202611-507 contacts →

Exact match

“Monthly Print Magazine | Webinars | Events Keeping you at the forefront of news, views and progress in hydrogen energy markets and technologies.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-106 contacts →

Exact match

“The energy industry's leading source for hydrogen news and analysis.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchEast Anglia, United KingdomHQ recorded Sep 21, 20261-105 contacts →

Exact match

“At HydroGenus our mission is to deliver the switch to clean, green hydrogen.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Meld Energy is a large scale UK green hydrogen developer with ambitions to produce 10%+ of country's electrolytic hydrogen powered by renewable energy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchOxford, United KingdomHQ recorded Sep 21, 202611-504 contacts →

Exact match

“Leading full-service brand building and communications group for the hydrogen and net zero sectors.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchSwansea, United KingdomHQ recorded Sep 21, 20261-104 contacts →

Exact match

“Fuelling greener communities Hyppo hydrogen solutions has been set up to expedite the shift away from fossil fuels.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLondon London, United KingdomHQ recorded Sep 21, 202651-2004 contacts →

Exact match

“RCG is an integrated market intelligence, management consulting and technical advisory firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchHandforth, United KingdomHQ recorded Sep 21, 20261-104 contacts →

Exact match

“JCM Consultant Engineers Ltd - Your Engineering Partner for a Sustainable Future.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 21, 20261-104 contacts →

Exact match

“At CREAS Energy Consulting, our vision is to be a leader of competitive decarbonisation within the energy-to-chemicals industrial sectors.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 84 hydrogen energy consultants based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 495 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrogen energy consultants based in the United Kingdom at a glance

As of Sep 21, 2026
55.6%Verified-email coverage
10.6Average contacts per company
1-10Median size (employees)
36.9%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
53
11-50
23
51-200
6
501-1,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 84 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “hydrogen energy consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 495 professional contacts with verified work emails across the full matched dataset. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hydrogen energy consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrogen energy consultants are there based in the United Kingdom?

RevenueBase identified 84 company matches for hydrogen energy consultants associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

OWC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hydrogen energy consultants?

London leads with 31 company records, followed by Cardiff (3) and Manchester (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 495 professional contacts with verified work emails tracked across these 84 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 SmartSearch, 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.