In reply to thebigeasy:
It is said that you should never lube a dirty chain, but we all do it occasionally.
I've heard of people filling one of those little fish shaped soy sauce with lube for that time when you get a squeak, and also people taking a dollop of grease wrapped in cling film for other things. Personally, I've only ever had issues when I haven't prepared correctly or at all.
With modern lube, 9 hours in the peak district should be a doddle. I just use finish line green wet lube for wet weather and muc off dry for dry weather. Wet lube isn't ideal in dusty dry conditions and is a pain to clean so some friends do use dry lube all year for everything but the really big rides.