Biography: Sara Sheen (born 2005) is a British actress known for playing the role of Matilda in “Matilda the Musical” on the West End as well as Roo in the 2018 live action Disney film “Christopher Robin”. Sara had her debut performance as Matilda on September 13th, 2016 (also Roald Dahl Day) and her final performance on the 18th of March, 2017.