Does this mean that we'll finally have seen the last of Mickey and Rose's mom? I've enjoyed Billie Piper in the role, but the endless sidetrips in the Tardis to touch base with her family grow increasingly wearying by series two (though dropping Mickey off on the Planet of the Cyberman was a step in the right direction). Here's hoping that series 3's companion will be an orphaned, single loner with no ties of any kind.