The Treasure Act 1996 only has territorial extent over E+W+NI, notably excluding Scotland, where treasure is still dealt with under (Scots) Common Law. Notably

The Treasure Act 1996 only has territorial extent over E+W+NI, notably excluding Scotland, where treasure is still dealt with under (Scots) Common Law. Notably, any reward is granted purely to the finder, though there is no default right to search land one does not own (and if discovered without permission of the landowner, there have been cases where the entire reward has been awarded to the landowner); de-facto, following the English and Northern Irish law, landowners normally grant access such that any reward is split equally.