I just wanted to mention at this opportunity that some British TV series from the late 70s, early 80s are absolutely brilliant and some of the best stuff I have ever watched. Tinker Tailor Soldier Spy, Smiley's People, Danger UXB, Sandbaggers and Sherlock Holmes are some of my favorites.
I grew up with Jeremy Brett's Sherlock Holmes, by far, in my opinion, the most accurate representation of the stories.
Only in my adult life did I read the stories, finding large chunks of the dialog in the TV show being word for word taken from the stories. And when not word for word, the tone and feel of the scenes so well portrayed on screen.
I was just thinking about Danger UXB recently and remember watching it on PBS with my Mom. Another show of that era that I remember loving was the miniseries of the Barchester Chronicles (adapting the first two of Trollope’s Barsetshire novels). During the DVD-by-mail era of Netflix, I revisited that one and it still held up, although I did not at the time realize just how star-studded the cast was.
Sherlock Holmes is great. Tinker Tailor was repeated through my childhood, so I saw it a few too many times. I watched it again recently and found it slow... However the cast of it and Smiley's People are great. Karla is a notable early appearance of Patrick Stewart.
There were some great period dramas at the time, if a little set bound (like I, Claudius)
One of my favorite Youtube channels I've come across in the last year is BBC Archive. Not fiction, but a mix of documentaries, interviews, human interest stories, and educational content from the 50's to the 80's and a little bit of 90's. This 1970 short film on a Scottish boy's last carefree days before starting school is probably my favorite that I've seen so far.
https://www.youtube.com/watch?v=Kv6PJd6ZvHY