Recently re-reading TTSS with Alec Guinness's Smiley in my imagination was a wonderful experience. Thank you John Le Carre.
PS One oddity is that in TTSS Toby Esterhase has a British accent but in SP he's acquired a broad Hungarian one!
Incidentally, my supervision partner was also Hungarian and has now returned and is running a bank in Budapest.
I'd consider anything else a creative approximation.
Just to save everyone 15 minutes of googling, it's not on Netflix or Amazon prime, but it is on Britbox: https://www.britbox.co.uk/programme/Tinker_Tailor_Soldier_Sp...
Edit: and on YouTube according to a comment further below -- https://news.ycombinator.com/item?id=25413572
However what I found more interesting was his autobiography. The way he explained late 1970s euopean politics without even trying was utterly magical.
I normally don't like autobiographies because they are usually just bad stories expertly written by ghost writers.
[1] its not really an autobiography, However pigeon stories is a series of short stories that give the background to either his characters in his books, or the situations his books cover.
Thank you John le Carré for such an outstanding, mesmerizing story. Thank you Alec Guinness for bringing to life one of the best characters ever created. I guess I will have to sit down and start my yearly ritual next Saturday.