Thanks for the welcome.
In Wales, W'ell be staying near LLanrug, so I shall look for somewhere near to there.
Yesterday, I was hunting at Bawdsey near the manor.(I did my RADAR training there when in the RAF in the early 70s). It's now some kind of school and the RADAR site has long been abandoned and dismantled.
The beach is absolutely littered with old scrap iron which I expect was part of the war defences.
There was one particular spot where my little cheapo got really excited with a high pitch (allegedly silver etc).
I dug down and exposed the usual great lump of iron that runs along that beach, but it still was getting very excited! I started digging some more and came to what looked like coal.
Still it carried on. I then thought Nah, this machine aint that efficient at great depth and put it down to it getting excited at the Iron post! I'll never never know, but I may go back there again as I know where the spot is, but the locals may get upset if I turn up with a JCB
I later went to ask a fruit farmer, if I could detect his land, and he thanked me, as I was the 1st to ever actually ask!! He told me that he thinks some go on there anyway, but he's never caught them, but he did say that if he let me, others living nearby would see me and think it's ok and then do it themselves. I did see the reasoning in that and he suggested finding more farms away from housing estates etc. where If I had permission, there would be no onlookers to get the idea that it's ok.
Currently, after my small gains yesterday, I am very happy with my Maplin cheapo and may the fun continue.

Garrett Ace 250 Powered by twin weber 45 DCOE's, stage 2 head, uprated cam and close ratio gearbox. 0 to 60 acres in 4.8 seconds