UK people: The oft-film-portrayed, functional, low-rent flat buildings that are normally shaped in a 90° or “L” angle?

I’m interested in terminology/slang, history, controversy,
arguments for/against, and other critique of these particular structures

I ofc googled, with limited terminology/context

Cybersecurity architecture is very analogous to city planning plus physical structures, so this is purely for my own curiosity / academic interest / edification. Cheers!

Commonly 9x+ taller:

When i moved to New England, i was utterly suspicious of “bread in a can” but i’ll be damned if #BMBeans brown bread isn’t one of my favorite things now

Not pictured: the accompanying beans or multiple pats of butter #comfortfood