@BiasBinding Also, I kept being distracted by the fact that most of it was filmed in and around Liverpool/Cheshire, rather than Woking/London, but I accept that's a matter of local knowledge.
When we were watching DD looked at the shots of the village and said "Oh I wonder where they filmed that, it's lovely". Then I read that it was in Great Budworth which we have visited several times but never even realised that was where it was while we were watching!