RichH - 7:10 am on Jun 14, 2012 (gmt 0)
Thanks for the tips g1smd. Currently I have:
meta http-equiv="Content-Language" content="en-gb"
I think this does the same thing but maybe I'll try your suggestion and see if that helps. I suspect though that Google sees and understands that I've specified that the page is in English but then it encounters all those misspelled and gibberish words. It then discards my English specification and makes a best guess that the page is in Japanese. The page still ranks well though despite all this so that's good.