On July 10, 2019, it was announced that Phoebe Dynevor and Regé-Jean Page will play leads, while Jonathan Bailey, Golda Rosheuvel, Luke Newton, Claudia Jessie, Nicola Coughlan, Ruby Barker, Sabrina Bartlett, Ruth Gemmell, Adjoa Andoh and Polly Walker was cast in as regulars.