Which Groupset?

I didn't mean limited choice of gearing, I meant limited choice for replacement parts. Buying an ultegra cassette and chain (the cheapest option) is total overkill for touring. It's a 2nd tier race group.
Plus, bike shops in the middle of nowhere tend to have limited stick of new new things, or even non-standard parts. Part of the reason I swapped from campag is because of going into bike shops in Wales and the mechanic looking at me like I'd brought a penny farthing in.

Fair point, however in this age of Wiggle et al I would imagine that you could have an Ultegra [broken part] with you by 10am the next day, even in The Wales.

Whilst it is a second tier racing group this also means it's designed to be strong, to shift under significant load and to be (relatively) lightweight- all positive aspects when it comes to laden touring.

£50 gets you an Ultegra cassette, £20 a chain- that's not astronomical money for the consumable parts.