The trippy film of Enid Blyton’s much loved novels has been 20 years in the making. We catch up with its adult and child stars – inside a giant cake as disco-dancing elves rollerskate pastAnyone who read Enid Blyton’s Faraway Tree novels as a child has imagined themselves roving through their magical landscapes. Most of us had a favourite, be it the Land of Wizards, or Nursery Rhymes, or Do-As-You-Please. Thirteen-year-old Billie Gadsdon, about to star in the highly anticipated film adaptation, The Magic Faraway Tree, particularly loves the Land of Goodies – but that’s because when she was last there, everything around her was made of sweets.Director Ben Gregor wanted his cast to interact with the fantastical surroundings as much as possible. And so, on their sound stage in Reading, Gadsdon found herself filming in a grove of marshmallow trees, surrounded by giant flying-saucer plants and Haribo strawberry beds. “I did eat a few,” she confides. The Land of Birthdays was just as fun – s...