Just been googling. Looks as if you're right. I did read somewhere that the HP experience was housed in an old airship hangar, and assumed that would have been the R100 and R101. Of course, there were others, so it still could be right about it being an old airship shed.
And of course, some of...
The books are brilliant; the films are a pretty good attempt at bringing them to life on screen (though probably wouldn't be anywhere near as good to someone who hadn't read the books first, so that they knew what was going on).
There are lots of films, and lots more TV series, that I think are...