Something shifted in the UK hydrogen companies over the last couple of years. For a long time, the conversation was mostly theoretical government targets, investment promises, cautious optimism. Now it's different. Projects that existed on planning documents are getting built. Companies that spent years in development are signing commercial contracts. The hydrogen revolution, to put it plainly, has stopped being a future event.
The UK is home to some genuinely interesting companies pushing this forward each attacking a different part of the problem. Some are building electrolysers. Some are developing fuel cells. Some, like us at Hydrogen Transition Energy, are focused on turning waste into clean hydrogen. The approaches are different. The destination is the same.
Here's a look at the companies worth knowing about and what they're actually doing.
Hydrogen Transition Energy (HTE)
We'd be remiss not to mention what we're doing at HTE, so here it is plainly stated.
HTE is developing the UK's first industrial-scale waste-to-hydrogen plant in Manston, Kent. Our technology plasma-assisted gasification operating at temperatures above 3,000 degrees converts non-recyclable waste materials including plastics, tyres, automotive shredder residue, medical waste, and municipal solid waste into fuel cell grade hydrogen meeting ISO 14687 standards.
Planning applications have been submitted. Partners are in place INENTEC as our key technology supplier and PEM gasification unit provider, alongside Plagazi whose technology is central to the process. The project is moving through the development pipeline.
What makes HTE's approach distinct is that we're solving two problems at once. The non-recyclable waste that currently goes to landfill or incineration becomes feedstock. The industries that need clean hydrogen get a local, low-carbon supply source. That's not a theoretical benefit it's the entire point of what we're building.
ITM Power
If you've followed the UK hydrogen space for any length of time, ITM Power is probably the first name you know. Founded in 2000 and listed on the London Stock Exchange, ITM builds proton exchange membrane (PEM) electrolysers the machines that split water into hydrogen and oxygen using electricity.
Their numbers are moving in the right direction. Revenues climbed nearly 58% in fiscal 2025 to just over £26 million, and the company has raised its 2026 revenue guidance to between £40 million and £43 million, driven by a growing contract backlog. They've been selected as technology partner for two major electrolyser projects in Germany totalling 710 MW of capacity not a small deal.
ITM isn't profitable yet. The path to profitability in this industry takes time and volume. But as arguably the largest dedicated green hydrogen operator in the UK, they're putting in the groundwork that matters.
Ceres Power
Ceres takes a different technical approach. Rather than PEM electrolysers, they develop solid-oxide fuel cell and electrolyser technology a higher-temperature process that, when done right, is more efficient and flexible than conventional methods.
Their business model is licensing-based, which sets them apart from most hydrogen companies. They don't just build and sell equipment they license their technology to large industrial partners who manufacture at scale. Their licensees include Weichai in China and Doosan in South Korea. That approach creates a global footprint without requiring Ceres to build factories everywhere.
It's a slower burn commercially, but it's a model that could pay off significantly once partner production volumes ramp up.
GeoPura
GeoPura doesn't get enough attention outside industry circles, and that's a shame. They provide hydrogen power units essentially clean electricity generation using hydrogen fuel cells, designed to replace diesel generators on construction sites, film sets, events, and anywhere else temporary power is needed.
It's an unglamorous application, but an important one. Diesel generators are a genuinely dirty source of emissions, often running in urban areas where air quality is already poor. GeoPura's units produce zero direct emissions and are already in active use across the UK. This is hydrogen doing a practical job today, not waiting for the infrastructure to catch up.
HiiROC
HiiROC is the most technically interesting company on this list, in my opinion. Their Thermal Plasma Electrolysis process splits methane into hydrogen and solid carbon without combustion, without CO₂ release. The solid carbon byproduct isn't waste either it can be used in tyres, inks, plastics, and asphalt.
They've already partnered with Centrica to trial hydrogen at the Brigg Energy Park and are targeting their first commercial deployment in 2026. CEO Tim Davies has been direct about what the company is trying to do: produce affordable clean hydrogen that doesn't require the electricity volumes that conventional electrolysis demands. If they pull that off at scale, it changes the cost equation significantly.
Fuel Cell Systems
Based in Hungerford, Berkshire, Fuel Cell Systems is delivering something concrete right now. They're building hydrogen refuelling infrastructure along the M4 corridor between London and Bristol the UK's flagship hydrogen-powered heavy goods vehicle project, supporting 30 hydrogen HGVs on commercial freight routes by summer 2026.
The project is estimated to save around 1,900 tonnes of carbon emissions annually. It's not a massive number in the context of UK-wide emissions, but it's proof of concept at commercial scale for hydrogen heavy transport and proof of concept is exactly what the industry needs right now.
N-Gen Energy Solutions
In July 2025, N-Gen signed a Low Carbon Hydrogen Agreement with the UK Government for a new hydrogen production and refuelling facility in Bradford, on the former Birkshall Gas Holder site. The facility is projected to produce 12.5 tonnes of hydrogen per day from early 2028 enough to power 800 buses while creating 125 jobs and delivering an estimated £120 million of economic value to West Yorkshire.
This is the largest project in the Government's first Hydrogen Allocation Round, supported by £2 billion of public funding. It's the kind of anchor project that regional hydrogen ecosystems get built around.
What All These Companies Have in Common
Different technologies. Different markets. Different stages of development. But there's a thread running through all of them: they're operating in a UK market that is, slowly but meaningfully, starting to reward seriousness.
The Hydrogen Energy Association has noted that projects are shifting from plans to real-world delivery. The government's Hydrogen Strategy and Hydrogen Allocation Round are putting real money behind commercial projects. Industry leaders are clear that continued policy clarity will be essential if the UK is to maintain a competitive edge in the global hydrogen race.
The companies doing the hard, specific, unglamorous work of figuring out technology, supply chains, planning permission, and offtake agreements those are the ones that are going to matter.
Conclusion
The UK hydrogen sector isn't one company's story. It's a collection of businesses some listed, some private, some early-stage each working on a different piece of the same puzzle. What's changed recently is that the pieces are starting to fit together. Infrastructure is being built. Contracts are being signed. The clean energy revolution the UK has been promising is, company by company, becoming real. At Hydrogen Transition Energy, we're proud to be part of that picture and proud of the work every company on this list is doing to move it forward.
FAQ
What makes UK hydrogen companies different from global competitors?
UK companies tend to focus on specific niches fuel cells, waste conversion, refuelling infrastructure rather than trying to compete on raw electrolyser volume with manufacturers in China or the US. That specialisation can be a strength in a market where practical deployment matters as much as production scale.
Is the UK government supporting these companies?
Yes, through several mechanisms the Hydrogen Allocation Round, the Net Zero Hydrogen Fund, and the Low Carbon Hydrogen Agreement framework. The first Hydrogen Allocation Round alone is backed by £2 billion of funding. Policy support isn't perfect or complete, but the direction is clear.
What is waste-to-hydrogen and how does HTE fit into the UK hydrogen landscape?
Waste-to-hydrogen converts non-recyclable waste into clean hydrogen through high-temperature thermochemical processes. HTE is developing this at industrial scale in Kent, making it one of the most distinctive companies in the UK hydrogen sector — addressing waste management and clean energy production simultaneously through the same facility.
How can businesses engage with UK hydrogen companies?
Depending on your sector, the entry points vary. Industrial energy users should explore offtake agreements with producers. Waste generators should look at feedstock supply arrangements. Logistics and transport operators should investigate refuelling infrastructure partnerships. For any of these conversations in the hydrogen space, HTE is a good starting point contact us at hydrogen-te.com.