British actress from Merseyside, most known for portraying Matilda Wormwood in Matilda the Musical for which she won a Laurence Olivier Award for Best Actress, and Janet Hodgson in The Enfield Haunting, for which she received a British Academy Television Award nomination. She is the youngest recipient of an Olivier Award at the age of 10.
Jess Walker, middle child of a middle class family, has perfected the art of vanishing in plain sight. But when she arrives at a concrete university campus under flat, grey, East Anglian skies, her world flares with colour.