Cheers, guys.
Here's another nice site with lots of background stuff about aircraft engines:
http://www.enginehistory.org/
Apparently, one could theoretically get a copy (printed or electronic) of a Hurricane I Pilot's Notes from the National Archives at Kew (GB):
http://www.nationalarchives.gov.uk/c...rue&UserType=0
Didn't go so far as to try this, though. The Engine History site has a Reference section with a lot of well, references to engine records present in the National Archives. Nothing for direct download, but that's probably a tall order given the amount of stuff present...