Jeremy Irons Charles Ryder Actor Anthony Andrews Sebastian Flyte Actor Diana Quick Julia Flyte Actor Simon Jones Lord Brideshead Actor Phoebe Nicholls Cordelia Flyte Actor Claire Bloom Lady Marchmain Actor Laurence Olivier Lord Marchmain Actor John Gielgud Edward Ryder Actor Charles Keating Rex Mottram Actor Jeremy Sinden Boy Mulcaster Actor Mona Washbourne Nanny Hawkins Actor John Grillo Mr. Samgrass Actor Nickolas Grace Anthony Blanche Actor Jane Asher Celia Ryder Actor Stéphane Audran Cara Actor John Mortimer Writer