There's no business like show business. Evans Davis and guests explore the success story that is UK theatre. From splashy musicals, and classic revivals to cutting edge new dramas the sector makes more than a billion pounds in ticket sales a year. But there's trouble on the horizon. Public subsidies for theatres are being cut back. Can corporate giving and donations from philanthropists continue to plug the shortfall? Guests Brenna Hobson, National Theatre of Scotland Kate Varah, the Old Vic, London Rachel Tackley, Chichester Festival Theatre.