The wonderful Katie Derham will once again be gracing your screens throughout The Proms period as she presents for the BBC. Katie presented John Williams Film Prom on BBC Four which you can catch up on here as they celebrated the 85th birthday of the world’s favourite film composer, John Williams. On Saturdays at 6:50pm Katie fronts Proms Extra on BBC Two to review the recent week of Proms 2017 with special guests.