Martha Holmes was the series producer of Life. She is a marine biologist with a PhD from the University of York and has produced programmes for major series including Life in the Freezer and Blue Planet, as well as the BAFTA-winning Wildlife Special: Polar Bear. Michael Gunton was the executive editor of Life and is director of development for the BBC NHU. He has a PhD in zoology from the University of Cambridge. Mike was series editor for The Natural World for three years and executive producer on numerous films and series, including Ultimate Killers, Galapagos, David Attenborough's Life in the Undergrowth and Alan Titchmarsh's British Isles: a Natural History.