Apologies for previous comment - dodgy ipad!
I was trying to say that, as suggested, I've been looking for a long time for a 6 letter word in Col 12, referring to British Isles, to no avail. The only columns where I can find anything interesting are 2,3, and they don't actually relate to what I thought was the theme of the puzzle, exemplified in the unclued entries. A further nudge please.