I'm still wading through The Mirror and the Light.
I had forgotten quite how good the TV series is.
I believe they are looking to adapt TM&TL as well some time.
It really is excellent stuff. The book is as good if niot better - but you have to concentrate.
It has a similar quality, feel, and build up and pace to the original TV version of Tinker Tailor Soldier Spy (the Alec Guiness version, not the film)