Bangers an Mash is devine when done right, I am not a fan of just boiled spuds mashed with a little butter / milk I like Garlic or Mustard (seed) Mash but that's just me, I agree some cheep sausages are quite good especially when it's just pork mined up with a little seasoning the problem is not all cheep sausages are like that (
I saw one in a local frozen food chain last year that was 48% meat and it was 20 of them for £1.50) but you get a lot of people in the UK who wouldn't know a good saussage or meat in general if you hit them with several pounds of the stuff, I know your a butcher and you'd be shocked to see what passes for Butchery in parts of the UK they fail at basic skill's such as keeping a Knife sharp knowing the names of non mainstream cut's or knowing what "The Lights" are.
There is a new butchers opening by me that's part of the Artisan meats movement growing in the UK (
we havent really had one in the UK until recently) who are partnering with a local bakers and putting a stone oven in to be able to sell fresh sausage an bacon butty's on fresh real bread, I think they are going to do pork pies as well.
As for Charcuterie, I am a BIG fan I cure an smoke as much of my own meats as I can and I have done for the last 13 years, it's a hard art to get right but when you do the pay off is well worth the effort.
This is one of my favourite books on the subject, if you haven't got it GET IT.
I think part of the whole lack of knowledge about good food especially meat's the the cultural "Yuck" factor people have developed people have lost a understanding of where food comes from, this is hitting a lot of kid's really really hard, and we are slowly clawing that understanding back and the quality of food is increasing because of it.