I Rolingash i would like to help you, but you are extremely far from me, in what concerns metal detecting our law its a bit stupid, i say this because it ain´t legal to detect but in some cases it cant be considered illegal either, as long as you´re detecting in private property and unclassified ground there should be no problem unless its proven that you are retrieving archaeologicaly relevant items, and in that case you´re nailed. So the best to do is detect far from archaeological sites and beaches, and if you eventually see yourself bothered by law officers or archaeologists it will be better not to have any relevant finds with you, and in that case the problems you may have will be minimal.
Its allways best to say you´re looking for your girlfriends lost ring, or even a meteorite, which are types of finds not looked at on our present law.
Greetings