Isabella Rose Blake-Thomas is an English child actress, best known for playing Lily-Rose in the children's television series Green Balloon Club. She voices the British Girl in Rise of the Guardians.
Blake-Thomas' first role was at the age of five, when she was selected to present the CBeebies television program Green Balloon Club. This ran for one series between 2008 and 2009. Later in 2009, she had a minor role in the biographical television film Enid, playing a girl who attends a tea party. In 2010, she was cast in an adaptation of the Just William series of books, playing Violet-Elizabeth Bott. Blake-Thomas had another minor role as 'Izzie', in the 2011 film Johnny English Reborn. Her first lead role was in the 2011 little known, independent film Little Glory as Julie, alongside Cameron BrightIn December 2012, Blake-Thomas played the part of Annabelle Crumb in the BBC Christmas adaptation of the David Walliams book Mr Stink.