18th-century England and Ireland viewed through the eyes of four beautiful high-born sisters - Caroline, Emily, Louisa, and Sarah Lennox, great-granddaughters of a king, daughters of a cabinet minister, and wives of politicians and peers.

• Serena Gordon
• Anne-Marie Duff
• Geraldine Somerville
• Siân Phillips
• Jodhi May
• Alun Armstrong
• Ben Daniels
• Julian Fellowes