My wheels on the arvon1 tourer are built by Arvon Stacey and are built with:
PW black 48 spoke hubs. Bought never-laced from eBay
Sun Rhyno-Lite 48 hole double-walled rims.
Spoked (unknown, but Arvon sources from Europe and North America) 4X
Arvon also builds bomb-proof hubs with (sometimes 4 sets of bearings). Hand built and competitively priced. PM if you need contact info, or PM "sixty fiver".