Had a search on ebay a few days ago for a screen protector and couldn't see one, so ended up buying a crystal clear case. Was only £2.50 so thought why not, if its rubbish haven't really lost a lot.
http://cgi.ebay.co.uk/2-CRYST[....]QQ_trksidZp1638Q2em118Q2el1247
Anyway it came today, and is much better than I thought it would be. Should stop my experia looking like my battered old N95 does. A few pictures for those that are interested.