I suppose it would be Bill Bryson. A walk in the woods gains him access to this list, but It's not really why I've nominated him.
I like that when he wrote his 'Notes from a Small Island' he visited one of the pubs I used to frequent as a student (Philharmonic Dining Halls, Hope Street, Liverpool). Reading between the lines he and Alexi Sayle got smashed on all the real ales there so he should make a good walking companion!