New processes and materials are needed to free the textile industries from petrochemical feedstocks and curb the generation of persistent microplastics in the environment. Prokitein is a novel class of protein-based biopolymers, filaments and hollow fibre technologies, which are green and renewable from cradle-to-grave. Using bio-inspired green chemistries, Prokitein fibres are water stable, have tuneable porosities and mechanically properties making them suitable for a wide range of applications from bioprocessing substrates and cellular agriculture to apparel. Based in the Harwell science park near Oxford, KalvoTech has developed Prokitein and a wet spinning platform for the production of Prokitein hollow fibres and filaments. Utilising the transformative potential of Prokitein, KalvoTech aims to supply next generation of green chemistry derived materials and bioprocesses to meet needs of the fibre industry, without compromise on quality or cost. Concurrently, KalvoTech is developing Prokitein-based hollow fibre bioreactors for cellular agriculture. KalvoTech aims to exploit the Prokitein technology platform in collaboration with established fibre technology companies and research establishments.