The youthful prince has been portrayed by actors Ed McVey, 21, and Rufus Kampa, 16
Kate Middleton may be portrayed by Meg Bellamy in the period in-between.
Dominic West will play Prince Charles, Elizabeth Debicki will play Princess Diana, and Olivia Williams will play Camilla Parker Bowles.
Imelda Staunton will play Queen Elizabeth II. As high Minister John predominant, Jonny Lee Miller may also make an appearance.