This is a HL7 FHIR server, and as you appear to be accessing this page from a web browser you are seeing a HTML version of the requested resource(s). You can also access this URL from a FHIR client as a ReSTful API call. For more details please see the HL7 FHIR specification.
<CodeSystem xmlns="http://hl7.org/fhir">
<id value="CareConnect-MedicationSupplyType-1"></id>
<text>
<status value="generated"></status>
</text>
<url value="https://fhir.hl7.org.uk/STU3/CodeSystem/CareConnect-MedicationSupplyType-1"></url>
<version value="1.0.0"></version>
<name value="Care Connect Medication Supply Type"></name>
<status value="draft"></status>
<date value="2018-07-11T00:00:00+00:00"></date>
<publisher value="HL7 UK"></publisher>
<description value="A CodeSystem to identify the type of medication supply."></description>
<copyright value="Copyright © 2016 HL7 UK"></copyright>
<caseSensitive value="true"></caseSensitive>
<content value="complete"></content>
<concept>
<code value="over-the-counter"></code>
<display value="Over the counter"></display>
</concept>
<concept>
<code value="emergency-supply"></code>
<display value="Emergency supply"></display>
</concept>
<concept>
<code value="patient-group-direction"></code>
<display value="Patient group direction"></display>
</concept>
<concept>
<code value="minor-ailments-scheme"></code>
<display value="Minor ailments scheme"></display>
</concept>
<concept>
<code value="prescription-dispensing"></code>
<display value="Prescription dispensing"></display>
</concept>
<concept>
<code value="private-prescription-dispensing"></code>
<display value="Private prescription dispensing"></display>
</concept>
<concept>
<code value="self-declared"></code>
<display value="Self declared"></display>
</concept>
</CodeSystem>