John farms with his brother Guy on a 125ha mixed farm at Little Bytham, near Stamford in Lincolnshire. They have been involved with growing population wheats since 2017 as part of a wider focus on producing specialist crops for millers and bakers. He was a founding member of Pasture for Life and helped in the development of the “Tracks” system of traceability for PfL certified dairy and meat products. He is currently working as part of the UK Grain Lab team in the development of the “HeteroGen” online platform to facilitate the traceability required by legislation for the exchange of heterogeneous (population) grains