Radio 4 comedy shows, especially panel games, don't seem to get an awful lot of tie-in books. The one and only such release for Just a Minute was Welcome to Just a Minute!, Nicholas Parsons' remarkably thorough history of the show from 2014. The News Quiz appears to have had at least one in the 1980s which I might look into at some point (there are a few other books called "News Quiz Book", but the title's so generic they might be unrelated to the radio show). The Unbelievable Truth had a pretty good stab at one a few years back, but perhaps covered too similar territory to the numerous QI books.
One happy exception to this rule is I'm Sorry I Haven't a Clue, which has had no end of attempts (well, eight) to replicate some of its various rounds in print since 1980. Since there doesn't seem to be any kind of guide to them available anywhere, I thought I'd have a go. (Since it has to expressly tie into the show, I have excluded things such as memoirs or other books by the regular panellists, and I have also reluctantly left out Jem Roberts' fully authorised history of the series, which needless to say you should buy if you haven't already.)