Actress who plays Fiona in 2016's Miss Peregrine's Home for Peculiar Children. She also played Matilda in the West End's production of Matilda the Musical from 2013 until 2014.
She made an appearance in the TV show William and Mary when she was 10 days old.
Her first film credit was in 2014 when she played Becca in the short film Unchained.
Her hometown is Kingston upon Thames, Surrey. She has an older brother.
Cleo Demetriou played Matilda in the original cast of the West End's Matilda the Musical.