Detecting in Turkey? Dont do it.

[Frankyg]

With regards to detecting on public parks in the UK, there are no specific laws other than those protecting designated historic sites. All public land is administered by the local council and their permission is required to detect. They are notoriously difficult to get permission from and most detectorists don't bother with public land because most farmers on private land will give you permission if you approach them properly, in the local pub usually, and buy them a pint or two. It's always worked for me!

 

[U.K. Brian]

Do a lot of recovery work (lost rings/keys etc) and you have to search where an item is lost and thats often parks. Admittedly they will demand to see your recovery technique in action. For just general searching on council land if they say no you approach your local councillor and get him to take the matter up.
The old bans on detecting were proved not legal so then some councils tried the tack of damage to the grass. This also failed because grass in the U.K. is considered a weed and of no value. Dig up the flower beds and its very different.