Set in 1936, the show takes viewers, old and new, back to the lavish world of Belgravia, London. A new set of occupants reside at 165 Eaton Place and viewers see how external and internal influences of the tumultuous pre-war period shape and mould the lives of this wealthy family and their servants.‬

Cast:
Keeley Hawes Keeley Hawes
Lady Agnes Holland 
Ed Stoppard Ed Stoppard
Sir Hallam Holland 
Adrian Scarborough Adrian Scarborough
Mr. Warwick Pritchard 
Neil Jackson Neil Jackson
Harry Spargo 
Anne Reid Anne Reid
Mrs. Clarice Thackeray 
Claire Foy Claire Foy
Lady Persephone Towyn