Emma Catherine Rigby is an English actress. She is best known for her role as Hannah Ashworth in Hollyoaks. She played Gemma Roscoe in the BBC One drama series Prisoners' Wives. She was featured as the Red Queen in the American fantasy-drama Once Upon a Time in Wonderland. She also played the lead role of Angie in Movies 24's A Cinderella Christmas, directed by Tosca Musk.