Jonathan Hyde also appeared in an earlier series of The Memoirs of Sherlock Holmes (1994) with Jeremy Brett as Holmes and Edward Hardwicke as Watson. Hyde appeared as Culverton Smith in The Memoirs of Sherlock Holmes: The Dying Detective (1994).
At the Ball, Edward VII and Queen Alexandra were introduced as "Their Royal Majesties". Such a style was never used by British Monarchs. Edward VI simply used the style "His Majesty" even though, as Emperor of India, he was entitled to be styled His Imperial and Royal Majesty.