John Knight is a part time professorial fellow in the renal and metabolic division of The George Institute for Global Health, where his academic research explores the 
clinical and economic outcomes of dialysis in resource constrained environments. He is also the Medical Director of Ellen Medical Devices, a company formed by the George Institute to commercialise the winning entry in the Affordable Dialysis Prize. He trained in paediatric nephrology at the Royal Alexandra Hospital for Children and Guy’s Hospital, London, and served for a time as the Medical Director of the Australian Kidney Foundation (now Kidney Health Australia).