Not here they dont.
And I live in a crap town.
Closest is a large Tesco. As you walk in you meet the pharmacy, baby stuff and greeting cards. Then a massive veg section, fresh meat, dairy. Then frozen, then breads and stuff, nuts, flour, and right to the back - the processed crap.
Our horrible little lidl. Same, huge veg at the doors, then fresh meat, then bakery, then dairy, most procesed crap at the back with frozen and booze.
Asda, same. Although the fresh bakery is pushed to the back with the processed goods.
Sainsbury's, massive veg as you walk in, dairy, fresh meat, etc. All packaged stuff towards the very back end.
M&S, same. Crap is at the back with booze.
Booths - huge veg and salad at front, although the ultra processed stuff here is next line along!
So Booths is dicing with it, really, possibly urges consumers to the back for fresh meat and dairy as they care about you getting your steps in 
Whenever I read about UPF's online, both the UK and US always complain that the bad stuff is intentionally put at the front. Well, no. Even Tesco removed the tiny 'on the go' choc shelf from the front and slapped it at the back.