I took a quick look at the link you provided. Just as you indicate the images and other resources (js, css) are N/A to the main html page. So I looked at the html source and selected one the images and confirmed that it is not available. Here’s an example URL that should resolve directly to the image used by your webapp but fails: http://www.tardis59.co.uk/images/gos-rocket-final.jpg
This leads me to suspect that your webapp is not setup correctly on your webserver. For example, maybe you either did not upload the other resources besides the main html page or you uploaded them to an incorrect location. Please verify that you have all the additional resources used by TARDIS59app.html installed relative to its location.
As a quick test you can use the Send To My Phone feature to test your webapp using MobiOne AppSync service. This will host your webapp and provide you a short term URL to view your webapp online on your iphone or with desktop browser.
Wayne
Genuitec Mobile Team