It absolutely chucked it down on my way back (into the wind) and I even managed to get lost. And fall off. It wasn't pretty but having done a coast-to-coast for the previous 3 years and escaped serious weather I suppose the odds were stacked against.
You don't need to see pics of an old bloke's suffering so here's a few snaps I took on the first day.
Tiny tunnel in the lune valley. The look of croons before the crook of lune.