It's all Bob Baker's fault.
Unlike other spin-offs, it doesn't take place in contemporary Britain, instead taking placing in grim and dystopian year of 2050 when the UK is overrun by Australia, while the UK itself seem to overrun the world. Which is basically like contemporary Britain, only with more robots. Holds dubious honour of being the first Whoniverse show to feature Canadian protagonist. Who is like Sarah Jane from SJA only a dude, and instead of being a miserable spinster, he's a widower and a pathetic wreck. Still likes to endanger minors though.