[T.B. Yoits]

Inspector Morse, Inspector Lewis, Endeavor, Poirot, and Foyles War (before the London episodes) are on a whole other level.

It's like watching top level cinema on a small screen.

Casting, props, scenery, acting, plots, dialogue, intrigue, etc. They really did it well.

[Chickensoup]

Casting, props, scenery, acting, plots, dialogue, intrigue, etc. They really did it well.

....

You are absolutely correct. The production qualities are phenomenal in these series.
I did not realize until recently that the Morse series spun off fan sites

https://morseandlewisandendeavour.com/morse-episode-reviews/

And music cds by the phenomenal Barrington Pheloung.

Interesting fact the opening music begins with MORSE name in Morse code.

The people who made these series really let their creative juices flow!