In reply to RobE: I attempted the Saunders in walking boots, and got very wet heavy feet. Even though I'm attempting more of a fast walk than a run in a 'I just want to finish' kind of attempt, I'm still stuck between approach shoes and trail running shoes. I'm not sure whether trail running shoes are enough of a step up from 'ordinary trainers' that the KIMM said you're not allowed? I'm not sure how much use I'd get out of fell running shoes, although in an ideal world I want to start getting into fell running a bit more.
I've been advised by a couple of people to get some gortex socks - does anyone else use them and rate them?