Emily Maitlis and Nick Robinson audition in Question Time pilots

Kirsty Wark and Samira Ahmed also tried out as hosts during secret show with panel of MPsWould-be Question Time hosts were put through their paces in secret pilots filmed at a south London school in front of a panel of MPs and the traditional noisy studio audience as BBC bosses decide who should replace Sir David Dimbleby after 25 years in the chair.Kirsty Wark, Samira Ahmed, Emily Maitlis and Nick Robinson took it in turns to host in front of the cameras on Sunday, helping to field questions ra