Complex sentence: Although he was an actor all his life, Eddington was in his late forties before he became a household name thanks to "The Good Life" (known as "Good Neighbors" in the US), first screened by the BBC in 1975.
Split into simpler sentences: Although he was an actor all his life, it was not until Eddington was in his late forties that he became a household name. This happened thanks to "The Good Life" (known as "Good Neighbors" in the US), first screened by the BBC in 1975.