Jollyrog has it exactly right (which is why I didn't comment before). Weston is a different category to Cork.
And there is no such thing as an Irish GAR. There is a form similar to a GAR whch is used by certain airports (Weston for example) by agreement with their local customs office to help them meet their committments to customs. But its use if far from universal.
But as Jollyrog said, the original poster asked about Cork, and his answer in relation to Cork is precisely correct.