Day 318: The Mutants Episode 1

This story is clearly about Empire. It concerns a planet where Earth has occupied and looked after it for several years, degrading the natives in the process. However, as their Empire is waning, they must consider which colonies are worth keeping and which could stand to have humanity removed from them. Thus the story begins with the humans being informed that they will be ordered to leave this plan and to reposition themselves on some other world. It's obviously comparable to the way in which England was in her heyday, keeping control of vast quantities of the Earth only to realise that this power is not going to last forever. The only problem is that this is a theme that we've seen countless times in Doctor Who before and that Bob Baker and Dave Martin are going to have to do something special to differentiate themselves from what surrounds them.