| Cast list | | Anthony Andrews | as | Prince of Wales | | Jane Seymour | as | Wallis Simpson | | Olivia de Havilland | as | Aunt Bessie Merryman | | Lucy Gutteridge | as | Thelma | | Tom Wilkinson | as | Ernest Simpson | | Julie Harris | as | Alice | | Robert Hardy | as | Winston Churchill | | Phyllis Calvert | as | Queen Mary | | Mona Bruce | as | Mrs. Baldwin | | Richenda Carey | as | Maud Kerr-Smiley | | Elizabeth Counsell | as | Katherine Rogers | | Susan Denaker | as | Connie Thaw | | Rupert Frazer | as | Lord Perry Brownlow | | Peter Graves | as | Lord Reith | | John Horsley | as | Justice Sir John Hawke | | Helen Horton | as | Martha | | Evelyn Laye | as | Lady Cunard | | Vincent Marzello | as | Benny Thaw | | Charlotte Mitchell | as | Lady Chatfield | | Claire Parker | as | Rosemary | | William Roberts | as | Herman Rogers | | Margaretta Scott | as | Lady Wigram | | Amanda Walker | as | Betty Lawson-Johnson | | David Waller | as | Stanley Baldwin | | Paul Williamson | as | Inspector Evans |
| | Crew list: | | Charles Jarrott (Director) | | William Luce (Writer) |
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