Welcome to BusinessCloud’s EnviroTech 50 ranking for 2026.
Greyparrot tops the annual ranking of UK companies creating original technology for use in green energy, to protect the environment and boost sustainability.
Following the creation of a 144-strong shortlist, the final ranking was decided by a combination of selections from an expert judging panel (see below) and a public vote among readers of BusinessCloud.
The judges
Lubomila Jordanova, co-founder, GreenTech Alliance
Lubomila co-founded network GreenTech Alliance and also Plan A, a Berlin startup which predicts where and how climate change will hit hardest and helps businesses reduce their carbon footprint.
Craig Melson, associate director for climate, environment and sustainability, techUK
Craig leads trade association techUK‘s work in climate, environment and sustainability – from climate change, ESG disclosures and due diligence, through to circular economy, human rights and conflict minerals.
David Pugh, VP – sustainable innovation, Cambridge Consultants
David, former director for sustainable industry at Digital Catapult, now leads the sustainable innovation work at Cambridge Consultants, which helps clients worldwide to identify the most meaningful ways to enable innovation.
Sammy Fry, head of climate, Tech Nation
Sammy is head of climate at Tech Nation, which supports game-changing founders, leaders and scaling companies so they can positively transform societies and economies through coaching, community and connections.
Beth Houghton, partner, head of impact investing fund, Palatine Private Equity
Beth, who leads the impact fund at Palatine, is committed to raising the profile of ESG, impact investing and diversity in the private equity industry.
Sara Boswell, director of the University of Salford’s Centre for Sustainable Innovation
Sara is the director of the Centre for Sustainable Innovation at the University of Salford. She has a background in both academia and industry within digital, innovation and skills.
James Gaffney, head of energy and sustainability M&A, Alvarez & Marsal
James is an experienced M&A professional working at Alvarez & Marsal who has a particular interest in advising on deals within the energy services & sustainability landscape.
Jonathan Symcox, editor, BusinessCloud
You can click on the company names to see what they do. Businesses wishing to purchase a dedicated business page – including a logo, website links and content promotion – with a feature box below can email editor Jonathan Symcox here.