Or
could you get a midi file of it, load it into Sibelius and tidy it up yourself?
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 11 Mar 2010, 9:12, 1 reply)

Tempting
But I really need the music to be as close to the printed original as possible- as in, the notation and expression markings- and I wouldn't know if the Midi was different.
(Sivvus trolley collision in the fruit aisle led to a jam, Thu 11 Mar 2010, 10:12, closed)

is there anything on that International Music Score project? They tend to scan in copies, so markings would be there - it's a bit hit and miss as to which edition you'd get though...or if they have it at all.

Also try: Senate House, British Library, Vaughan-W Societies etc.
(The Empress it seems you CAN polish a turd!, Thu 11 Mar 2010, 10:23, closed)

If I end up doing Greensleeves I'm going to get it from IMSLP
Tis generally my first port of call- my last three projects have all involved scores from there. :P
(Sivvus trolley collision in the fruit aisle led to a jam, Thu 11 Mar 2010, 11:28, closed)