John joined NIBSC in 2004 as a scientist involved in control testing of coagulation factors. Since then John has gained a PhD from King’s College London where he investigated the non-anticoagulant function of heparin and has progressed to become a senior scientist in the Haemostasis Section at NIBSC. His main areas of responsibility encompass the control testing and standardisation of coagulation inhibitors (antithrombin, protein C and protein S) and the standardisation of both unfractionated and low molecular weight heparin. He is involved in standardisation of assay methods with a special interest in global coagulation assays such as thrombin generation test and thromboelastography, producing a number of reference reagents to support these assays. His research focuses on novel activities of heparin and related polysaccharides, collaborating with Professor Clive Page at King’s College London