I wanted a few specific decals - the SP ones on the tail unit, and Wylie and Holland (a dealer near Telford) were very good. Initially they reckoned they had a microfiche thingy but they didn't. It took some effort but they eventually got a fax of the diagram detailing all of the stickers and their part numbers for the '96 MC28 Repsol SP. Then I just picked the ones I needed - stickers weren't cheap though, I got the 2 SP tail ones and that was about 23 quid I think.
Sooo... try Wylie and Holland or hastle your local Honda dealer, if Wylie can do it then any other Honda dealer should be able to help if they can be arsed .