I've just had a thought! You have Jack Whites and Cookes Music in Norwich. I haven't visited either for a very long time, but I seem to remember Cookes opened up a SHEET music shop nearly opposite their instrument store, maybe they could get you a copy of the dots.
The last sheet music I bought was from a shop in Bury St. Edmunds (Bonners Music I think it was called) they actually typed in the Title I was after on the computer and it came up with three versions. To my amazement, they were able to play a small extract from each version straight from the computer. I listened to all three and then having made my choice, they were able to print it out for me there and then. The whole purchase was done and dusted in less than 10 minutes - I was greatly impressed with their service I can tell you.
Maybe the Norwich shops use this system now - it's worth making an enquiry at least.