I'm currently in the process of writing a book which takes a look at British comedies which came and went without much fanfare or simply haven't had much written about them. I've already written about quite a few, but recommendations are always welcome as there is so much out there.
Really old sitcoms (pre-1970-ish) are mostly out as most of the footage from this era simply doesn't exist any more. And I need to watch these shows to write about them with some measure of authority. Saying that, I have covered The Gnomes of Dulwich (1969) as I read through a few of the scripts a couple of years back. And I watched the one surviving episode of Hugh and I Spy a while back as well, so that's in there too. In conclusion: list anything odd and unusual from the past.
Thanks!