Refeyn’s SamuxMP benchtop mass photometer enables rapid analysis of adeno-associated virus samples. Image courtesy of Refeyn Ltd.
Oxford, UK – 26 January 2026 – Refeyn, the company behind pioneering mass photometry technology, has been named in The Sunday Times 100 Tech 2026, an annual ranking of the fastest-growing private technology companies in the UK.
The Sunday Times 100 Tech list recognizes companies based on three-year revenue growth, highlighting businesses that have demonstrated sustained commercial momentum and technological impact. Refeyn ranked 39th in the hardware category, reflecting revenue growth of approximately 40% over the last three years.
The ranking places Refeyn among a cohort of high-growth UK technology firms spanning sectors including the life sciences, energy and sustainability, telecommunications, and digital technology.
“Being recognized in The Sunday Times 100 Tech list is an important milestone for the company,” said Gerry Mackay, Refeyn’s CEO. “It reflects the impact our technology has had, the trust we have established among our customers, and the dedication of our staff as we continue to build the business.”
“This recognition validates our focus on delivering meaningful value to the scientists using our tools – across academia, contract research and manufacturing, and biopharma,” added Fiona Coats, Refeyn’s Chief Product and Marketing Officer.
Spun out of Oxford University in 2018, Refeyn develops bioanalytical instruments that feature its innovative mass photometry technology. The company works with customers in academia and industry – including in the development and manufacturing of mRNA, cell and gene, and antibody therapeutics. Mass photometry has been widely adopted and has been used in more than 1,400 scientific publications. Refeyn is headquartered in Oxford, UK, with a US headquarters in Waltham, Massachusetts, and additional sites across Europe, Asia and the US.
The Sunday Times 100 Tech recognition follows on Refeyn’s announcement earlier this month that they had been recognized as a Top Employer for 2026 in the UK.
Refeyn Ltd. (www.refeyn.com) specializes in the development, production, and distribution of mass photometry for industry and academia. Enabling accurate mass measurement of single particles in solution, in their native state, and without labels, Refeyn’s products deliver crucial analytics faster and use less sample than conventional methods.
The company’s vision is to accelerate discovery through innovation, empowering the latest scientific breakthroughs in basic research and transforming biotherapeutic development and manufacturing.
Refeyn has been recognized for its unique approach to biomolecular analysis through multiple awards, including in the Royal Society of Chemistry Emerging Technologies Competition. It has recently been recognized as a Top Employer in the UK and accredited as an Inclusive Employer.
Applications of mass photometry include: Characterization of sample purity and heterogeneity, adeno-associated viral (AAV) vector empty/full analysis, assessment of protein oligomerization and interactions, analysis of antibody aggregation and binding, and mRNA sample characterization.
For more information, contact:
Catie Lichten – Scientific Communications Manager, Refeyn
E: catie.lichten@refeyn.com;
T: +44 (0)1865 800 175
Or
Ric Kositzke – Senior Director, Marketing, Refeyn
E: ric.kositzke@refeyn.com;
T: +1 (971) 368-1755
