Stephen Fry as Sir Simon de Canterville (voice)

Hugh Laurie as Grim Reaper / Gardener / Swordsman / Monster / Old Duke (voice)

Freddie Highmore as Henry Duke of Cheshire (voice)

Emily Carey as Virginia Otis (voice)

Imelda Staunton as Mrs Umney (voice)

Meera Syal as Lucretia Otis (voice)

David Harewood as Hiram Otis (voice)

Miranda Hart as Algernean Van Finchley (voice)

Toby Jones as The Reverend Chasuble (voice)

Jakey Schiff as Louis Otis (voice)

Bennett Miller as Kent Otis (voice)

Bill Lobley as Lord Monroe (voice)

Elizabeth Sankey as Lady Eleanor de Canterville / Lady Erlynne / Guests (voice)

Keiron Self as Professor Borsakov / Guests (voice)

Giles New as The Colonel / Guests (voice)

Lynne Seymour as Mrs Borsakov / Guests (voice)

Georgia Small as Marjorie Fairfax / Guests (voice)