Company lists · Data refreshed September 2026
Top 25 Hydrogen consulting firms based in the United Kingdom
RevenueBase identified 74 hydrogen consulting firms headquartered in the United Kingdom as of September 2026 and tracks 513 professional contacts across them, including 220 with verified work emails and 23 with mobile numbers. London is the largest hub.
This list covers hydrogen 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 25 largest hydrogen consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 100 | ||||
“Everoze is an employee-owned renewables, green hydrogen and storage consultancy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 36 | ||||
“We are a highly experienced and fully independent hydrocarbon accounting consultancy, specialising in Measurement, Allocation and System Delivery projects for clients in the…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 34 | ||||
“We help energy companies keep critical pipeline infrastructure safe, compliant, and ready for the energy transition.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | Ryze PowerIndirect evidence | 33 | |||
“Ryze Power provides complete solutions in the alternative fuels space as sectors transition towards net zero.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | LOGANPartial evidence | 30 | |||
“Based in Scotland, Logan is a designer, supplier, and integrator of complete hydrogen production, refuelling, compression, storage, dispensing and fuel cell solutions.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 27 | ||||
“The energy transition is gaining momentum but needs to accelerate to meet the challenges posed by the climate emergency.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | World Hydrogen LeadersPartial evidence | 21 | |||
“Accelerating the hydrogen transition through actionable insights and networking.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | N-GenPartial evidence | 16 | |||
“At N-Gen, we’re helping our customers to lead the race towards decarbonisation with low carbon hydrogen.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 13 | ||||
“A team of leading low carbon energy professionals with global experience, each with a track record of individual success.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 12 | ||||
“We're a hydrogen-specialist political strategy and communications agency.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 | ||||
“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…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 | ||||
“Founded in 2022, H2Au is leading the way in natural hydrogen exploration and production (E&P), combining proven exploration techniques and unique play-based models to identify…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 | ||||
“Humble Hydrogen is a leading hydrogen solution provider and manufacturer.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 | ||||
“The energy industry's leading source for hydrogen news and analysis.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | WSS Energy ConsultingIndirect evidence | 5 | |||
“We have been providing independent strategic advice on the hydrocarbon transition and the impact of new energy technology for over 10 years.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 | ||||
“At HydroGenus our mission is to deliver the switch to clean, green hydrogen.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 | ||||
“Leading full-service brand building and communications group for the hydrogen and net zero sectors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 | ||||
“Fuelling greener communities Hyppo hydrogen solutions has been set up to expedite the shift away from fossil fuels.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 | ||||
“At CREAS Energy Consulting, our vision is to be a leader of competitive decarbonisation within the energy-to-chemicals industrial sectors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 | ||||
“JCM Consultant Engineers Ltd - Your Engineering Partner for a Sustainable Future.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 | ||||
“The Energy Contract Company is a leading international consulting company in the global Oil, Gas and LNG industry, providing expert commercial services to clients from reservoir…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 | ||||
“Circular Refining is a dynamic innovation company at the forefront of the hydrogen revolution.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | SourcinghoundPartial evidence | 3 | |||
“Sourcinghound is a dedicated recruitment partner, specialising in the fast evolving landscape of Hydrogen, Fuel Cell & Battery technology.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 | ||||
“ENERSPIRE delivers cutting-edge consulting solutions to accelerate the energy transition.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 74 hydrogen consulting firms based in the United Kingdom
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Hydrogen consulting firms based in the United Kingdom at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 hydrogen consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “hydrogen consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among hydrogen 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 an evidence 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, 220 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 3, 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.
Hydrogen consulting firms by metro
- Hydrogen consulting firms in London25
Frequently asked
How many hydrogen consulting firms are there based in the United Kingdom?
RevenueBase identified 74 hydrogen 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?
Everoze, headquartered in Glasgow, tops this list with the largest team on record.
Which city has the most hydrogen consulting firms?
London leads with 25 headquartered companies, followed by Aberdeen (4) and Manchester (3).
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 220 verified decision-maker contacts tracked across these 74 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 3, 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.
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