Lizzie Ennever was an episode writer for Fireman Sam. She also has written scripts for "Ella Bella Bingo", "Bear Behaving Badly", "Topsy and Tim", "Bing", "Thomas and Friends", "Postman Pat", "Mike the Knight", "Chuggington", "Casper's Scare School", "Pet Squad", and "Poppy Cat". She also worked as a production assistant for "Bear Behaving Badly".