Just got an email from the guy who does http://glastomap.com/ as I pointed out Dairy Ground and Paines Ground were the wrong way round. Apparently it's always been wrong, so take care if you're directing anyone!! Could get confusing, especially if the staff don't know.
I try to copy the official map each year as best I can. I have seen two maps from this year that both have Dairy and Paines in these new locations (see the official one below). The story is that apparently Paines and Dairy have been labelled incorrectly for years! This is the first year they've actually corrected it. The new positions do make more sense as Dairy is now actually closest to the diary part of the farm. Hope that clears it up!