Liddiard appears as the lead character Ella in the web series MsLabelled. She had the recurring role of Hanna on the City science-fiction drama series Between. She portrayed the lead character Thai in the Tarragon Theatre production of Kat Sandler's play Mustard. Liddiard has achieved wider recognition after being cast in the role constable Adelaide Stratton in the British-Canadian-American period mystery series Houdini & Doyle in 2016.
