The NIHR Bioresource consists of several groups of participants: ~70k from the general population and blood donors (COMPARE, INTERVAL and STRIDES studies); ~19k with one of ~50 rare diseases (RD) including a ~5k pilot for GEL; ~30k with Inflammatory Bowel Disease (IBD) which include the members of Gut Reaction, the Health Data Research Hub for IBD; and ~20k with Anxiety or depression (GLAD study). It intends to extend recruitment in all areas, and to other rare and common disease groups, with a target of ~300k by 2022. SNP chip data can be used to impute many of the (non-rare) SNPs not included on the chips. The NIHR BioResource is using a modified version of the UK Biobank protocol to improve the options for recall.