That's because your entire site is in frames, hence why the address in the address bar on your browser never changes when you change pages.
This is what Google and all other search engines see when they view your site.
HTML Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"><title>naturallysimple.co.uk</title>
<frameset rows="*">
<frame src="http://www.lycoseshop.co.uk/epages/luk.sf/?ObjectPath=/shops/naturallysimple.co.uk" scrolling="auto">
</frameset>
As far as the search bots are concerned, that is all that is on your site, the rest is on
www.lycoseshop.co.uk . The best thing to do is get some proper hosting and host your store on that. Doing it the way you are with Lycos, you will never have any success with the search engines.