Personally I prefer pig in my banger too Tim. At home I only buy good quality, non of this 'smartprice' in my house! but then I have a picky bugger Greek male to feed.
With a rather large quantity of diners, a limited resource at the site, I will go for the best I can buy with the money we are to be given.
I'm more concerned with folks not eating enough, of course i don't want sawdust in my bangers either, but catering for such numbers can't always give you a banger that you know the name of the pig it came from.
I'm a yorkshire mum, who puts enough food on the table for the 5000 and then some, so for the AR I won't be changing my spots and skimping on supplies. I want SK to be fed up of the sight of bangers and burgers, cause he'll be cooking all night