Ellen Thomas played a Clockwork Droid in the Doctor Who story The Girl in the Fireplace and Carmen in the Doctor Who story Planet of the Dead.
Thomas also played a Clockwork Droid at Doctor Who: A Celebration in 2006, credited as "Elen Thomas".
She is best known for her role as the principal in the teen series Coming of Age and for her role as Grace Olibumni in EastEnders.