Axel's lavish birthday party was filmed at the luxurious Villa Sa Fortalesa d'Albercutx, in Pollença (Mallorca)
Spain's Tabernas Desert (Desierto de Tabernas), captured early in the series, is the location that was often used by Italian director Sergio Leone for his spaghetti westerns.
The series is the product the people responsible for the popular The Crown (2016) and Money Heist (2017).
Laurence Fox and Angela Griffin previously worked together on Lewis (2006-2015)
Laura Haddock and Barry Ward previously worked together on The Capture (2019).