In “Pride and Prejudice: Having a Ball,” social historian Amanda Vickery leads the action as a team of experts recreate a Regency ball at Chawton House. Joined by Alastair Sooke and a coterie of professionals – a food historian, a costume expert, music history academics and a choreographer who trains a team of dance students to take the floor – cameras will follow the recreation inspired by Austen’s Netherfield ball.