I watched the BBC series around about the time they were first released (late 1980s). Back then we had only one television channel in the whole of Bangladesh and the series would be aired every Friday at 3:00 pm. I hadn't read the books back then (I don't think they were even available in Bangladesh at that time), so I found the series absolutely fascinating: the characters, the plots, pretty much everything. I'd wait the whole week for Friday afternoon to come so that I could watch the next episode.
By the time I read the books several years later, I had forgotten the intricate details of the BBC series. Having also watched the recent movie version of LWW enriched with all the special effects, I would probably find a million things to critique about the BBC series if I ever watch it again. But back in the late 80s, the BBC series as a whole was a magical experience.
I do remember the music that used to play at the beginning of the BBC series (I think it was called "Aslan's Theme"). If I remember correctly, the soundtrack of the BBC series was done by the Philharmonia Orchestra, and most of the scores from the BBC series (definitely the score from the opening credits at least) would beat the soundtrack of the recent LWW movie.