Sorted…
I have managed to create alternative links from the thumbnails on the home page by using a useful plugin called Page Links To:
http://wordpress.org/plugins/page-links-to/installation/
Now those images no longer link to the post pages.
Also, for those wishing to do it by editing PHP there is a how to here:
http://www.agentwp.com/how-to-link-wordpress-post-title-to-an-external-url.
I can’t thank myself enough for finding this solution!!!
