They also (or should I say used to) digitalise any of their holdings free of charge which they did for me on several occasions.
British Library please take note
Oh, how I wish the BL would have the decency to start a programme of digitisation - or, better still, simply respond (as does the Sibley Music Library in the U.S.) to requests for copies of scores by digitising them free of charge, posting the requester a link to the digitised score, then uploading it to IMSLP. How civilised! The process takes between 4-6 weeks, but it's a splendid service. All the BL does is rip you off!