Dr. Simon Choong, Leader of University College London Hospital, UK.Simon Choong undertook his medical school and postgraduate urological training at University College Hospital, London. He was appointed to lead the stone and endourology unit at University College London Hospitals in 2002. The unit manages complex urinary tract stones and provides minimally invasive management of upper urinary tract transitional cell tumors, pelviureteric junction obstruction, complex ureteric strictures and kidney obstruction.He carries out paediatric stone surgery at Great Ormond Street Hospital for children and runs national and international masterclasses in stones and endourological management. He was awarded a Hunterian Professorship by the Royal College of Surgeons of England in 2000 and the BAUS / BJU International Travelling Fellowship in 2001.