Perhaps you could try Mike Gill directly at NMRS, he may have spare copies lurking, but I'm less clear how a printed pdf (that you can scribble on it to your heart's content) is less useful than the real thing, even if that looks prettier.
Quite possibly Kilhope may have a copy to examine as I gave a lot of NMRS/NCMRS stuff to them in 2015/6 although I don't know offhand if BM 33 was among them but it was quite a comprehensive pile. Abe Books is another possible (expensive) source.
Jim
PS Mr Fellows, if, like me, you have installed an ad blocker Mr Moore's stuff doesn't appear. Bloody technology bah humbug!! :flowers: