May 2026
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Largest ClimateTech Public Companies in the UK
Benchmark revenue and EBITDA valuation multiples for public comps like
Rentokil Initial, Drax Group, Greencoat UK Wind, Porvair and Vertical Aerospace.
 | Rentokil Initial is the largest global provider of route-based pest control and commercial hygiene services, operating in 89 countries, with its largest operations in the United States following the acquisition of Terminix. The group also offers a range of specialist route-based services, including office and commercial space plant care, property care, and workwear rentals. The group serves a diverse client base of global food producers, hotel chains, industrial goods companies, restaurants, and individual residential customers. | $6 | +34% | $16B | $20B | 2.8x | 13.1x | ||
| Drax Group PLC is a UK-based renewable energy company engaged in renewable power generation, the production of sustainable biomass and the sale of renewable electricity to businesses. It operates a generation portfolio of sustainable biomass, hydro-electric, and pumped hydro storage assets across four sites in England and Scotland. The company also operates a bioenergy supply business with manufacturing facilities in the United States and Canada, producing compressed wood pellets for its own use and for customers in Europe and Asia. Its segments include Pellet Production, Generation, and Customers. The majority of its revenue is generated from the Customers segment which sells renewable electricity to industrial and commercial customers in the United Kingdom. | $11 | +21% | $4B | $5B | 0.6x | 3.6x | ||
| Greencoat UK Wind PLC is a renewable infrastructure fund, solely and fully invested in operating UK wind farms. The company aims to provide investors with an annual dividend that increases in line with RPI inflation. It also tries to preserve the capital value of its investment portfolio in the long-term on a real basis through reinvestment of excess cash flow and the prudent use of portfolio leverage. The company invests in both onshore and offshore wind farms. All of the group's income is generated within the UK. | $1 | -13% | $3B | $5B | (83.6x) | — | ||
| Porvair PLC is an environmental treatment control company. It develops filtration solutions to be used by various types of industries. The company caters to its clients through three divisions, Aerospace and Industrial, Laboratory and Metal Melt Quality. The Aerospace and Industrial Division is a key revenue generator, principally serving the aviation, and energy and industrial markets. Laboratory Division principally serving the bioscience and environmental laboratory instrument and consumables market. Metal Melt Quality Division principally serving the global aluminium, North American Free Trade Agreement (NAFTA) iron foundry and superalloys markets. The company generates the majority of its manufacturing revenue from sales in the United States. | $10 | -9% | $458M | $447M | 1.7x | 10.1x | ||
| Vertical Aerospace Ltd is engaged in making air travel personal, on-demand, and carbon-free. The company is a world-wide aerospace and technology company that is pioneering electric aviation, focused on designing, manufacturing, and selling a zero operating emission eVTOL aircraft for use in the AAM market, using the technology from the aerospace, automotive, and energy industries. The VX4, Vertical's flagship aircraft, is a piloted electric vertical take-off and landing (eVTOL) vehicle capable of carrying four passengers. The Group operates as a single operating segment and one reporting segment, being the development and commercialization of eVTOL technology. | $3 | -52% | $325M | $348M | — | 1.3x | ||
| AFC Energy PLC is a provider of hydrogen fuel cell power systems to generate clean energy in support of the energy transition. The company’s scalable systems provide off-grid, zero-emission power that is already being deployed for rapid electric vehicle charging and the replacement of diesel generators for temporary power applications. it is also working with its partners in the deployment of products for the Maritime, Ports, Data Centers, and Rail industries, emphasizing the central role of its technology in the decarbonization of industry. | $0 | +85% | $234M | $200M | — | — | ||
| Proton Motor Power Systems PLC and its subsidiaries are manufacturers of hydrogen fuel cells and fuel cell systems for mobile, maritime and stationary applications. It offers OEM fuel cell systems products, power supplies, and solar battery storage products. The company is organized into only the principal operating division, Green Energy. Its primary geographic markets are United Kingdom, Germany, Rest of Europe, and the rest of the world of which Europe generates the majority of its revenue. | $0 | -- | $2M | $188M | 66.4x | (21.0x) | ||
| Median | $3 | +6% | $458M | $447M | 1.7x | 3.6x |
Financial data powered by FactSet and Morningstar. Valuation multiples as of current fiscal year. For more data, start your free trial here.
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