Hey there leelad, for someone who's into metal detecting you don't seem to know much about History
! I'm starting to lose track of all your requests for possible locations!! Maybe you need to dig into a few books first!
Keen as you are mate don't forget that you can't go digging up scheduled monuments like ancient castles & battlefields!! If you still haven't joined a club yet, check out the 'National Council for Metal Detecting' web-site there's loads of sound advice on there.