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>
    <pages>
      <page pageid="12259" ns="0" title="Feedback" contentmodel="wikitext" pagelanguage="en-gb" touched="2020-04-18T19:17:23Z" lastrevid="70699" counter="6920" length="1310" />
      <page pageid="9644" ns="0" title="Job roles" contentmodel="wikitext" pagelanguage="en-gb" touched="2011-07-29T14:33:00Z" lastrevid="46967" counter="1671" length="27" redirect="" new="" />
      <page pageid="2" ns="0" title="SLT History" contentmodel="wikitext" pagelanguage="en-gb" touched="2024-01-27T19:05:42Z" lastrevid="75489" counter="107835" length="5141" />
      <page pageid="624" ns="0" title="SLT Members&#039; Club Social Events" contentmodel="wikitext" pagelanguage="en-gb" touched="2018-04-04T12:55:54Z" lastrevid="62296" counter="20315" length="4938" />
      <page pageid="4" ns="0" title="SLT Members&#039; Pages" contentmodel="wikitext" pagelanguage="en-gb" touched="2024-04-01T15:34:10Z" lastrevid="75975" counter="1764567" length="63678" />
      <page pageid="3" ns="0" title="SLT Productions" contentmodel="wikitext" pagelanguage="en-gb" touched="2024-04-13T10:27:04Z" lastrevid="76026" counter="503003" length="88877" />
      <page pageid="22" ns="12" title="Help:Editing" contentmodel="wikitext" pagelanguage="en-gb" touched="2010-08-17T15:30:13Z" lastrevid="42433" counter="143931" length="8762" />
    </pages>
  </query>
</api>