Mark Spark in the Dark and Jimmy Jelly

Jacqueline Wilson is a hugely successful children’s author and has won a number of prestigious awards, including the British Children's Book of the Year and the Guardian Children's Fiction Award. In 2002 Jacqueline received an OBE for services to literacy in schools. She was the highest-borrowed author in British libraries in the last decade.

Kim Hicks is a British actress and voice artist. She has performed in a number of one-woman shows and stage productions, including Courtship, An Audience with Sarah Guppy and The House of Bernarda Alba. Hicks is a long-time audiobook narrator, voicing more than 80 audiobooks. She is regularly praised by AudioFile magazine for her ‘rich, lush, mellifluous narration’.