Ooh look, a plot point
ETA: In more detail: Good acting, yes-ish. Good long-term plot development, yes. Good story? Possibly, hiding under the cheap recurring jokes - and stronger than last week's, definitely. But somehow it just didn't engage me - every time I got drawn into the story Bill(ie?y?) would try and force HRH to say "we are not amused", and it repeatedly broke the flow for me.
Admittedly, I wans't in a very TV mood either, and missed the start thinking it was the same time as last week.
PS: The fact my brain kept going "Do have a picture of Queen Victoria" every time she appeared probably didn't help the dramatic tension much either...