We really don't need the minutia of every decision Orwell made while writing his stories, I'd go so far as to say agonizing over such devalues the work.
It's very easy to imagine that tomorrow some government somewhere will be describing the dystopia that George Orwell predicted would occur if people were suddenly allowed to speak freely.
In fact, it's easy to imagine that even the original works themselves can barely serve to protect the original message.
The real version is that found in the state’s digital archives.
/s
Also: the originals are mostly only relevant for their collectible value. Researchers can more easily work off digital scans. No need to buy anything or keep anything together physically, just scan it if you are really that interested.
Edit:
It seems there's a lot of digitalized materials in UCL online archives, but I would be surprised if all documents were digitalized:
https://www.ucl.ac.uk/library/digital-collections/collection...
We shouldn't let the value of something be determined by the budgets and personal tastes of researchers from a random period in history.
Look at the kind of historical artifacts that provide untold insight into ancient societies. Many of these artifacts only exist today because they were accidentally buried or boarded up in a wall and forgotten about while all others were wiped from the world for whatever reason, be it simply recycling or a more malevolent and systematic purge by motivated individuals.
We don't know what is valuable so we should assume that it is all valuable.
That is a very messy approach to conservation...