Earlier quoted context omitted.
1984 seems to be set in the UK ('Airstrip One', of 'Oceana'). None of the storyline actually takes place in 'Eurasia' or 'Eastasia' or any other part of the world. They don't need to even actually exist for the storyline. Indeed, this itself is a message about controlling a populace via control of information. The rest of the world could have been razed by war, they could be total utopias. The propaganda keeps people…
Yes, but Orwell wasn't really writing _about_ the UK, you need to look at the context and background of the work, which is the rise of Stalinism and the fear of that brand of totalitarianism taking over.
There is a very politically-motivated school of interpretation of 1984 that wants to excessively tie it to "Stalinism" to prevent using the book to critique other political doctrines - completely unrelated to Stalinism or communism - that exhibit the same tendencies.
Interpret more broadly and it becomes a much better, more important book.