viewing source of your page, i see the following code for the +1 button:
<!-- Place this tag where you want the +1 button to render -->
<g:plusone size="tall" href="undefined"></g:plusone>
<!-- Place this tag after the last plusone tag -->
href="undefined"
instead of undefined, the href should be the address for the page to like:
href="http://graphicinfluence.co.uk/index.php"