It is the most beloved British Scifi show ever, and predates Star Trek.
It is often hokey, and often brilliant.
https://www.youtube.com/watch?v=Hmv80q5fAWU
My obliviousness to TV shows is unsurpassed. Never watched Star Trek either, believe it or not. Did not own a TV until I was 32, and then only to watch Magnum PI and Miami Vice.