Humpf. According to IMDB, it ran for four seasons … it WAS the next Blackadder. I only found a few episodes on Youtube back in the day.
But that “four seasons” was still fewer than 20 episodes.
Three 6-episode seasons. Have you tried streaming episodes from the official page?
I saw that show a few years ago and thought it was hilarious with some of the absurdity of The IT Crowd.
I watched several episodes of Black Books solely because of the amazing Tamsin Greig. The other two just dragged it down. IMHO.