The Doctor has faced a whole galaxy full of formidable foes. David Tennant and a host of stars including John Barrowman, Derek Jacobi, Zoe Wannamaker, Freema Agyeman and Sarah Parish look through the greatest moments of his deadliest enemies.

A fellow Gallifreyan, The Master has been a thorn in the Doctor's side throughout his history. David Tennant, John Simm, Derek Jacobi and other cast members talk through their favourite Master moments and pinpoint some of their finest showdowns.