Guest Stars Joanna Bobin as Lady Cowper Kathryn Drysdale as Genevieve Delacroix Jessica Madsen as Cressida Cowper Hugh Sachs as Brimsley Joanne Henry as Judgy Mama Molly McGlynn as Maid Rose Jason Barnett as Jeffries Julian Ovenden as Sir Henry Granville Naomi Preston-Low as Handsome Young Lady Sandra Teles as Lucy Granville Ned Porteous as Lord Wetherby Amy Beth Hayes as Lady Trowbridge Emma Beattie as Ambitious Mama Tom Lorcan as Clyvedon Footman Rob Kendrick as Composer Celine Buckens as Kitty Langham Georgia Slowe as Guest 2 Cate Debenham-Taylor as Concert Lady Ashley Campbell as Concert Lord Sukh Ojla as Founding Hospital Nurse Oscar Porter as Featherington Servant Gilly Tompkins as Guest 1