Physical Sciences Data Infrastructure (PSDI) is a UK national initiative that aims to accelerate research in the physical sciences by providing an integrated data infrastructure that brings together and builds upon the various data systems researchers currently use. PSDI will help researchers to (i) find and access to reference quality data from commercial and open sources; (ii) combine data from different sources; (iii) share data, software and models including experimental and simulation data, (iv) use AI to explore data, (v) learn how to make the results of their research open and FAIR.