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"?>
    <allredirects garcontinue="News/Station" />
      <page pageid="2003" ns="0" title="Bellenden Residents Group" />
      <page pageid="1791" ns="0" title="Bussey Building" />
      <page pageid="1723" ns="0" title="CLF Weekender" />
      <page pageid="2187" ns="0" title="CLF Weekender 2007" />
      <page pageid="3695" ns="0" title="Climate change" />
      <page pageid="1905" ns="0" title="Copeland Cultural Quarter" />
      <page pageid="1500" ns="0" title="Cross-River Tram" />
      <page pageid="2864" ns="0" title="Gateway plans" />
      <page pageid="1955" ns="0" title="Intercultural Creativity and Conference Centre" />
      <page pageid="2253" ns="0" title="News" />