To be honest, at least here, land is hard to get hold of. If you see an empty plot of land, ask around to see who owns it, then approach them ....no harm in trying that - they can only say no. Maybe put an ad up on the notice board at your nearest auction mart, or animal feed store, where people with land are likely to go?
Pity you are not in Derbyshire, as my little croft is still stood empty!
Good luck with your search.