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"?>
    <alllinks galcontinue="CCTV_London" />
      <page pageid="268" ns="0" title="Backlight Compensation" />
      <page pageid="107" ns="0" title="Bullet Resistant Cameras" />
      <page pageid="77" ns="0" title="Bullet Resistant Cameras (Silent Witness)" />
      <page pageid="581" ns="0" title="Buying Access Control" />
      <page pageid="19" ns="0" title="Buying CCTV" />
      <page pageid="17" ns="0" title="CCTV" />
      <page pageid="545" ns="0" title="CCTV Advertising - Buyer Beware" />
      <page pageid="121" ns="0" title="CCTV Control Room Furniture" />
      <page pageid="557" ns="0" title="CCTV Installation" />
      <page pageid="32" ns="0" title="CCTV Installation Companies" />