Site doesn't look like preview

When I look at the preview page for the site it looks perfect. But the real site looks very basic and completely different.

I don’t think it’s theme related as I’ve tried different themes and they all do the same – look much better in preview than when it’s live.

Any help would be appreciated! Site is http://www.wiganbadminton.co.uk – you’ll be able to see how basic it looks for some reason.

The site used to run fine, but it’s been neglected and i’m trying to get it back on it’s feet.