Known as the 'diamond logo' it featured throughout the Third Doctor's final series and for almost all of the Fourth Doctor's era. Next Episode: Doctor Who returns later this year! Search term ...

But the Fourth Doctor's intro still feels special and continues ... And of course, the iconic diamond logo. It's all blended together to one of the greatest theme tunes in television history.

Also, the Cloister Bell chimes. This was first heard in the Fourth Doctor's final story, Logopolis. This is the first episode to feature the new logo. Appropriately, it's the eleventh Doctor Who ...