Series 4 will have a Doctor-Lite Episode(s)

In keeping with every series of Christel Doctor Who so far, and indeed most of the BBC series of Doctor Who, CDW series 4 will have at least one Doctor-Lite episode. I should clarify that by Doctor-Lite, I mean that the Doctor will not be the main character. I have just started writing a Doctor-Lite story and it is already shaping up to be a good one.