This is a great book - as well researched as the TV programme it covers.
Yes Minister was one of the truly great BBC sitcoms - it was a worthy contestant for best sitcom, where it came 6th. It works on TV on radio, in the magnificent books, and also as recent events show, as a stage show. Few comedies can cope so well with different mediums.
I think the thing that stops Yes Minister being the funniest is that it is bound by reality and is perhaps too serious.
What is interesting is that not only was a lot of the comedy based on real events, even comedy the writers thought they had invented turned out to have real life counterparts !
One strange thing highlighted is the episode where the Health Minister proposed to clamp down on smoking with a variety of suggestions that seemed funny then but which pretty much became Government policy 20 years later.