Andrew,
I got a reply from Ashley. Sadly, it's not in the positive.
He said that they don't make SLR/DSLR adapters as they can be purchased off the shelf, and, provided me links to B&H and Fotodiox. I'd have thought that as it was a fairly specialised item (not everyone owns a Takahashi telescope) that they'd be into building this type of thing.
I had already looked at OPT, B&H, Anacortes and Fotodiox before I sent my query, as well.
OK, who here has the skills and know-how to build an adapter?
H