(It's also frozen foods in a lot of stores. Frozen vegetables are as good as fresh. Ice cream, not so much.)
For the most part the aisles are more processed (read: calorie dense and nutrients removed). They should be eaten more sparingly.
That doesn't work too well in the UK. Fruit/Veg tends to be a whole zone with aisles/central islands and maybe some edge. Meat and dairy is often in an aisle. Speciality stuff is on the edges e.g. deli, butcher, bakery, cheese counters if you have them.
Going around the edge of my supermarket clockwise in order:
Near door: bulk snacks and cases of beer.
Left edge: in store baked goods: donuts/bread. Packaged baked goods: cake, bread. Freezer goods: three way split of veg, junk and deserts.
Back wall: Imported regional products - mix of basics and junk food for African/Chinese/Korean/Japanese residents. Breakfast cereals: mostly sugary rubbish but some oatmeal. Biscuits: mostly sugar but some rice cakes.
Right edge: kitchen/bathroom products. Not fattening but an acquired taste.
Healthy stuff is its own aisles and pods near the cookies/cakes side of the store.
On the plus side, fresh fruits and vegetables are directly across from the entrance, so it's hard to miss.