In reply to Robert Durran:
In Scotland, near you: Loxley Colour, close to AG Barr factory (Irnbru drink). Address: 1 Drum Mains Park, Orchardton woods, Glasgow G68 9LD - large building in its own grounds; take Mollinsburn exit from M74, aiming for ginormous factory which is the Irnbru palace. Go past this for a few hundred yards and the Loxley place is on the right. Phone 0845 519 5000; wb loxleycolour.com; eml: cs@loxleycolour.com.
Good quality from slides: about £7 per slide, 35mm trannies, flat bed scan.
I too require copies for an Alps project of about 85 x 35mm trannies and can't decide to spend the money.