As the Doctor’s newest companion, Clara Oswald, steps into the TARDIS, take a look back at previous companions that have won over the Doctor’s heart in Doctor Who: The Companions. Along the way, companions old and new talk about how the show has changed their lives, and how they've never quite managed to leave the TARDIS behind. Matt Smith and David Tennant are joined by fellow contributors including John Barrowman (Captain Jack), Arthur Darvill (Rory) and Noel Clarke (Mickey).