And if things had been shaken up in Season 3, that was nothing to what was to come in Season 4.

Suddenly we have a new Doctor, a new approach to the series and by the end of the season a completely different regular cast to the season opener. Blimey, it's all go.

And which is your favourite? (I'm including The War Machines here as I forgot it last season, and well, none of you picked me up on its omission, so I'm not apologising! )