Guest Stars Joanna Bobin as Lady Cowper Hugh Sachs as Brimsley Jessica Madsen as Cressida Cowper Joanne Henry as Judgy Mama Ruby Stokes as Francesca Bridgerton Molly McGlynn as Maid Rose Jason Barnett as Jeffries Oli Higginson as Footman John Simon Ludders as Humboldt Naomi Preston-Low as Handsome Young Lady Joseph Macnab as Featherington Footman Al Nedjari as Lord-in-waiting Jamie Beamish as Nigel Berbrooke Nathan Vidal as Delivery Boy Emma Beattie as Ambitious Mama Simon Lennon as Lord Ambrose Vincent Davies as Master of Ceremonies Eleanor Nawal as Lively Young Lady Ram Gupta as Nervous Suitor Jonathan Jude as Handsome Young Man Nikkita Chadha as Fashionable Young Lady