You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaicontinue="TDR_SC_2011.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2217" ns="6" title="File:TBA Racing 2000.png" imagerepository="local">
        <imageinfo>
          <ii timestamp="2011-11-28T14:35:37Z" user="Mal mckee" />
        </imageinfo>
      </page>
      <page pageid="1143" ns="6" title="File:TDE Meganes.jpg" imagerepository="local">
        <imageinfo>
          <ii timestamp="2011-08-06T16:26:40Z" user="Chris williamson" />
        </imageinfo>
      </page>
      <page pageid="1381" ns="6" title="File:TDRSC2011.png" imagerepository="local">
        <imageinfo>
          <ii timestamp="2011-08-11T09:53:21Z" user="Chris williamson" />
        </imageinfo>
      </page>
      <page pageid="2117" ns="6" title="File:TDR 2011.png" imagerepository="local">
        <imageinfo>
          <ii timestamp="2011-11-18T17:16:59Z" user="Ric scott" />
        </imageinfo>
      </page>
    </pages>
  </query>
</api>