Added definition of the UK

Author: dbillington-nhs

app/views/address-update/is-address-uk.html

@@ -20,7 +20,6 @@
 
     <div class="nhsuk-grid-row">
       <div class="nhsuk-grid-column-two-thirds">
-
         <form action="what-is-your-current-address" method="post" autocomplete="off">
 
           {% call fieldset({
@@ -30,6 +29,7 @@
               isPageHeading: true
             }
           }) %}
+<p>The UK is England, Wales, Scotland and Northern Ireland.</p>
 
           {{ radios({
             "idPrefix": "is-address-uk",