A Netflix spokesman said: “The Crown finished filming one day earlier than planned for the Christmas break following a few positive cases within the team, thus ensuring others’ safety and so that everyone on production can enjoy a festive break with their loved ones.”
The outbreak comes after Bertie Carvel and Lydia Leonard were seen in character as Tony Blair and his wife Cherie in pictures from the set.
The Wire star West takes over the role of Charles from Josh O’Connor, while The Night Manager actress Debicki will replace Emma Corrin.
Imelda Staunton will take over the role of the Queen from Olivia Colman, while Jonathan Pryce will replace Tobias Menzies as the Duke of Edinburgh and Lesley Manville will take on Princess Margaret, following in the footsteps of Helena Bonham Carter.
The Crown was due to end after the fifth series, but the show’s creator and writer, Peter Morgan, later said it will be extended to include a sixth series.