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 aicontinue="Category-Management.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="Bacibp_product.jpg" timestamp="2011-10-22T23:29:00Z" url="http://www.wicwiki.org.uk/mediawiki/images/2/22/Bacibp_product.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bacibp_product.jpg" ns="6" title="File:Bacibp product.jpg" />
      <img name="Bible.jpeg" timestamp="2011-11-20T12:42:41Z" url="http://www.wicwiki.org.uk/mediawiki/images/c/ce/Bible.jpeg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bible.jpeg" ns="6" title="File:Bible.jpeg" />
      <img name="Bible.jpg" timestamp="2015-04-24T11:53:10Z" url="http://www.wicwiki.org.uk/mediawiki/images/d/d6/Bible.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bible.jpg" ns="6" title="File:Bible.jpg" />
      <img name="Bible2.jpg" timestamp="2011-11-20T12:49:58Z" url="http://www.wicwiki.org.uk/mediawiki/images/e/e6/Bible2.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bible2.jpg" ns="6" title="File:Bible2.jpg" />
      <img name="Britain_riots_fire-apha-110823.jpg" timestamp="2011-10-27T20:11:52Z" url="http://www.wicwiki.org.uk/mediawiki/images/2/2d/Britain_riots_fire-apha-110823.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Britain_riots_fire-apha-110823.jpg" ns="6" title="File:Britain riots fire-apha-110823.jpg" />
      <img name="Britain_vandalism-asha-110823,1.jpg" timestamp="2011-10-27T20:13:28Z" url="http://www.wicwiki.org.uk/mediawiki/images/4/4d/Britain_vandalism-asha-110823%2C1.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Britain_vandalism-asha-110823,1.jpg" ns="6" title="File:Britain vandalism-asha-110823,1.jpg" />
      <img name="British_empire-asha-111229.gif" timestamp="2012-01-10T23:01:24Z" url="http://www.wicwiki.org.uk/mediawiki/images/4/4c/British_empire-asha-111229.gif" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:British_empire-asha-111229.gif" ns="6" title="File:British empire-asha-111229.gif" />
      <img name="Bud3.gif" timestamp="2011-11-21T12:24:58Z" url="http://www.wicwiki.org.uk/mediawiki/images/6/69/Bud3.gif" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bud3.gif" ns="6" title="File:Bud3.gif" />
      <img name="Bvine.gif" timestamp="2011-11-21T21:36:15Z" url="http://www.wicwiki.org.uk/mediawiki/images/1/15/Bvine.gif" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Bvine.gif" ns="6" title="File:Bvine.gif" />
      <img name="Cameron_eu_europe-apha-111229.jpg" timestamp="2012-01-10T23:03:47Z" url="http://www.wicwiki.org.uk/mediawiki/images/4/43/Cameron_eu_europe-apha-111229.jpg" descriptionurl="http://www.wicwiki.org.uk/mediawiki/index.php/File:Cameron_eu_europe-apha-111229.jpg" ns="6" title="File:Cameron eu europe-apha-111229.jpg" />
    </allimages>
  </query>
</api>