Which 60s british tv show had Elizabethan serenade as the theme music?

The 1960s British TV show that featured "Elizabethan Serenade" as its theme music is "The Forsyte Saga." This series, based on the novels by John Galsworthy, originally aired in 1967 and became known for its rich storytelling and period drama. The theme music contributed to the show's elegant and historical atmosphere.