Billie Piper as Rose Tyler was a big part of Doctor Who's 2005 revival, and is one of the most beloved companions. But what ...

David Tennant's Tenth Doctor experiences his own timeline in a (mostly) linear fashion, but it can be a complicated thing for viewers at times.

When Rose Tyler meets a mysterious stranger called the Doctor, her life will never be the same again. Soon she realises that the whole of planet Earth is in danger. Meet the new Doctor!