It will also feature West’s son Senan West as a young Prince William (aged around 11). Teddy Hawley and Will Powell will both play a young Prince Harry at different ages.

While the producers remain as tight-lipped as ever regarding which moments of the British royals’ lives they plan to re-visit during the show, the casting suggests that Season 5 will focus on the 1990s, including events leading-up to and possibly following Diana’s death in 1997.

As Variety revealed last year, Diana’s boyfriend Dodi Al-Fayed, who died alongside her in the Paris crash, will be portrayed on the show by 'The Kite Runner' star Khalid Abdalla while his father, former department store owner Mohamed Al-Fayed, will be played by Salim Daw ('Oslo').

Given Kate’s on-screen debut and the casting of 16-year-old Kampa as a younger version of William all signs point to Season 6, which is set to go into production this fall, focusing on the late 1990s and early 2000s. Prince William was 15 in August 1997, when his mother died.

He took a gap year before enrolling at St Andrew’s University in Scotland in 2001, where he met fellow pupil Kate. They went on to date for 10 years before eventually tying the knot in 2011.

The 1990s and early 2000s continued to be a tumultuous time for the royals. The family’s popularity plummeted to its lowest ebb ever following Diana’s death and was rocked by numerous scandals. Princes William and Harry became known for stumbling out of nightclubs in the early hours of the morning, often surrounded by glamorous posh blondes; Prince Andrew was in the throes of his friendship with convicted pedophile Jeffrey Epstein and allegedly abused his accuser Virginia Guiffre multiple times; Prince Charles was attempting to rehabilitate his image while simultaneously integrating his former mistress, Camilla Parker-Bowles, into public life and conspiracy theories about Diana’s death raged, with fringe obsessives even claiming Prince Philip was responsible.