Fiona Shaw is an Irish actress and theatre director. She is best known for her aclaimed theatre roles but to International audiences she is probably most familiar for her role as Petunia Dursley in the Harry Potter films and in 2011 for her role as Marnie Stonebrook in the True Blood series. Fiona was awarded an honorary CBE in 2001 for her services to drama and she has of course read numerous audiobooks including Dr. Johnson's London by Liza Picard, for Orion.
Tim Spector is Professor of Genetic Epidemiology at King's College London and Hon Consultant Physician at Guy's and St Thomas' Hospital. He has won several academic awards and published over 700 academic papers, a large proportion of which relate to nutrition and the causes of obesity. Since 2011 he has lead the largest microbiome project in the UK, using genetic sequencing to study the bacteria in the guts of 5,000 twins. He is the lead investigator for British Gut, the UK's largest open-source science project to understand the microbial diversity of the human gut. He is the author of THE DIET MYTH.
Ian Stewart was awarded the 1995 Michael Faraday Medal by the Royal Society for the year's most significant contribution to the public understanding of science. He is Professor of Mathematics and Director of the Mathematics Awareness Centre at the University of Warwick. Previous publications include DOES GOD PLAY DICE? and THE MAGICAL MAZE.