Geoffrey PalmerHenry Ponsonby Antony SherPrime Minister Benjamin Disraeli Gerard ButlerArchie Brown Richard PascoDoctor Jenner David WestheadPrince of Wales (Bertie) Georgie GlenLady Churchill Sara StewartPrincess Alexandra Finty WilliamsPrincess Helena Oliver Ford DaviesDean of Windsor Delia LindsaySociety Lady Bridget McConnellLady Ely Claire NicolsonPrincess Louise Hattie LadburyPrincess Alice Alex MenziesPrince Arthur Simon McKerrellPrince Leopold Cherith MellorMary Ann Disraeli Catherine O'DonnellLady-in-Waiting Rupert FarleyBertie's Valet Rebecca CharlesAssistant Dresser George HallSpeaker of the House Robin MarchalCommons Counter Theo Fraser SteeleFootman James VaughanSir Charles Dilke Charlotte DirickxArt Direction Martin ChildsProduction Design Richard GreatrexDirector Of Photography Veronica McAleerMakeup Artist Beverley BindaKey Hair Stylist Ros WardWardrobe Supervisor Deirdre ClancyCostume Design Lisa WestcottMakeup Designer Deborah SabanFirst Assistant Director Jonathan SalesAssistant Editor Sarah MortonDialogue Editor Claire ToveyLocation Manager Roland CaineLocation Manager