Holly studied PPE at New College, Oxford, and later became a solicitor. She began writing as a hobby at law school, along with hot yoga and marathon running; only the writing has continued. In 2016, Holly undertook a writing course at City University. She is married to James and they have two young children, Cleo and Delilah - Delilah being the exact same age as The Courier since she was born the same week as the first word was written! They live in north London.