In the UK treasure objects are Crown property and do not belong to the finder or landowner. Finders have a responsibility for the safekeeping of treasure objects until they are handed over to a relevant authority, such as a Finds Liaison Officer (FLO) or museum.
An object/coin is part of the ‘same find’ if it is found in the same place as another object/coin or if they had been buried together previously before being scattered. If the owner can be traced, then it is not considered to be treasure.
Northern Ireland
While Northern Ireland has the same treasure laws as England and Wales, there is an additional law that prohibits the use of detectors to search for antiquities. In Northern Ireland any digging or excavation to search for archaeological objects requires a licence from the Department for Communities, through its Historic Environment Division (HED) under Article 41 of the Historic Monuments and Archaeological Objects (NI) Order 1995.
Article 41 licences are generally only issued to archaeological professionals as part of valid archaeological projects that have been agreed in advance with the Historic Environment Division. For further information see the Historic Environment Division
Scotland
The Scottish definition of treasure is supported by Scottish Law and is described by Treasure Trove Scotland.
Any portable antiquity, no matter their age or material, is the property of the Crown and may be claimed as Treasure Trove and must be reported. Modern objects, like Victorian coins and machinery fragments do not need to be reported.
If the find is confirmed as Treasure Trove, the finder will be offered an ex-gratia payment and the object allocated to a museum to be made accessible for public display and research.
If the find is not claimed as Treasure Trove, it is returned to the finder along with a certificate formally disclaiming the item.