When you think of Great Britain, one of the things you think of is the good old British Chip. Unfortunately, if you visit an Olympic Venue during London 2012, you will not be served chips by any of the caterers, because it upsets McDonalds.
What is McDonalds problem? They don't even sell Chips, they sell French Fries (& not very good ones at that). I'm sure that if another vendor sells proper British Chips, it will not make a dent in profits for the global monster.