Thanks!
Peter, it is the 'Trekking' specification which I had built up by SJS but tweaked a bit. I went for the XT chainset, Rigida Grizzly CSS rims on XT hubs. I've also changed seatpost and stem to ones I had previously.
I had a light, drop-bar bike before, but wanted something that could take wider tyres and could carry more. I chose the flat bar, as I hardly ever rode on the drops.
The bike rides beautifully, and I have to say, the service and indeed the whole buying experience I had from Lisa at Thorn/SJS was first class.