It was held at the Perth mart (united Auctions), but they have moved their business to the new mart to the west of Stirling (on the Blair Drummond road), so I don't know what's happening this year.
It's a big show, but you have to have your birds there for two days.........not handy if you're far away, unless you can stay nearby to be able to look after them.
I haven't ever entered because I have never been able to find out who deals with the entries either.