As Solar said - there will already be way too much food so don't fret about bringing stuff, especially if you have a long drive.
I confess this is a very attractive idea, but with one major shortcoming : if I were to turn up, having prepared nothing, and then proceed to scoff everyone else's food, I would feel
unbelievably mean and guilty. So here is an idea, for Chris to accept or reject as he wishes : how about a voluntary donation (say GBP 10-00) from those who turn up with nothing, which can then be used to defray the expenses of all those who have gone to the trouble of buying and preparing something ? I would be more than happy to toss in my GBP 10-00 in these circumstances.
** Phil.