Trained in Obstetrics and Gynaecology in Edinburgh, with a WHO Research Fellow post in a hormonal male contraceptive trial, then Subspecialty training in Reproductive Medicine. He was appointed to the MRC Human Reproductive Sciences Unit in 1998 with a Consultant post in Reproductive Endocrinology and Infertility at the Royal Infirmary of Edinburgh. Subsequently appointed to Chair of Clinical Reproductive Science at the University in 2005: over subsequent years established a group investigating female reproductive lifespan, and he has also conducted clinical studies developing our understanding of novel neuropeptides in human reproductive function in men and women. He also provides a specialist endocrinology service to the Edinburgh Gender Identity Clinic. He was founding Coordinator of the ESHRE Special Interest Group in Fertility Preservation, and is a member of the HFEA Scientific and Clinical Advances Advisory Committee and the ESHRE Executive Committee.