In 2018, at the age of 7, Isla made her professional debut in the Cameron Mackintosh production of Les Miserables (UK and Ireland tour) as young Eponine and then as Little Cosette. The following year at the age of 8, Isla played the lead role of Cindy Lou Who in Dr Seuss' How The Grinch Stole Christmas the Musical UK premiere.
In 2021 Isla filmed two series of the BBC/Amazon Prime TV comedy series 'The Outlaws' playing the role of Holly, granddaughter of Frank played by Christopher Walken and directed by Stephen Merchant and John Butler.
Further TV credits include 'Child Zelda' in 'The Sandman' for Netflix - expected for release in 2022, 'Kes' in 'The Witcher:Blood Origin' also for Netflix and 'Straun's Daughter' in the Apple TV series 'Slow Horses'.
