1). Parks and Common Land areas are subject to policing, these are no-go-areas.
(2). SSI - Sights of Special Interest, cover all historic sites and buildings in jersey, these are no-go-areas, “with one exception as below” (a).
(a). However, one Extended Beach Area, starting from La Collette in St. Helier, East Coast going around Northward through to Greve D’Azette, Green Island, Le Hocq, La Rocque, and into the bay of Grouville upto Gorey Harbour, allows you to beach detect and recover finds in these areas, but keep in mind the sites marine environment, this is why it has an SSI placed on it.
(3). Metals of Gold/Silver, rings or the like with person/persons loss incurred, requires the finder to take the item into our police station, at Rouge Bouillon in St Helier ; where details would be taken and if the item is not claimed, it becomes either crown property, or returned to the finder in time.
(4). Lastly, Jersey has a Custom & Excise Law, policing objects of historic interest, and are restricted from going out of the island, without a license…
So if you recover a find or finds that have a date of 50 years or more, you need a Custom Licence No. 108, to be granted export for the find after the find/object has been assessed by our Jersey Heritage Trust, at La Houge Bie Museum to determine its context for recording, and for the islands history the museum might, buy the find.