St John Greene grew up in the West Country, where he met his teenage sweetheart, Kate. A qualified medic and lifeguard, St John, known to his friends as Singe, founded Training Saints, which specializes in teaching outdoor activities and helping people gain qualifications and careers in the maritime industry. Since Kate's death Singe has devoted his life to raising their two young sons, Reef and Finn. He spends all of his free time teaching them the things he loved to do with Kate: sailing, scuba diving, jet skiing and power boating near their home in Somerset. Mum's List is his first book, and is the basis for the film of the same name.