I am Dutch. My bike was built by
www.m-gineering.nl my country's premier custom frame builder for touring bikes. See
http://www.wereldfietser.nl/images/stories/2009/de eerste keer op fietsvakantie.pdf swcrol to bottom of the document. In essence it is a classic British style drop bar tourer, but with 26 inch wheels and a mix of modern components such as from Rohloff, SON and Magura, and classic components like the TA Zephyr cranks, and a number of Nitto parts.
My choice for 26 inch wheels was dictated by the changed face of modern touring. There are so many more cars than thirty-five years ago when I first started that you have to move out to much smaller roads than before, including the occasional gravel road or even muddy trail. I have really come to like this kind of touring, as it also brings me into closer contact with nature. Unless you want to ride very fast, I think a bike like mine is ideal for almost anything. I also use it for local rides on both tarmac and trails. Remember that the choice of bike is dictated by the worst conditions you may encounter. I have seen enough of your Sustrans routes to know that I would not want a bike with narrow tyres.
Send me a pm for detailed information.
Willem