Tim Spector is a Professor of Genetic Epidemiology at Kings College London and Hon consultant Physician at Guys and St Thomas' Hospital. He set up the Twins UK register in 1993, the largest of its kind in the world, which he continues to direct. He has several academic awards and has published over 500 academic papers. He has appeared in several TV documentaries and is often consulted in British and international media on his team's cutting-edge research.