Anthony Sampson’s Anatomy of Britain in 1962 was a success with many follow-ups until Who Runs This Place? The Anatomy of Britain in the 21st Century in 2004; last in the series as Samson died that year.
At Number 56 we give the thumbs down to any TV series that has too many episodes (dispensation granted to The Crown) and is too shaggy dog, so it is seldom you will read a recommendation here.