Add wording to download page

app/templates/views/agreement.html

@@ -2,7 +2,7 @@
 {% from "components/sub-navigation.html" import sub_navigation %}
 
 {% block per_page_title %}
-  GOV.UK Notify data sharing and financial agreement
+  Download the GOV.UK Notify data sharing and financial agreement
 {% endblock %}
 
 {% block maincolumn_content %}
@@ -14,11 +14,21 @@
   <div class="column-two-thirds">
 
     <h1 class="heading-large">
-      GOV.UK Notify data sharing and financial agreement
+      Download the GOV.UK Notify data sharing and financial agreement
     </h1>
 
     <p>
-      <a href="{{ url_for('main.download_agreement') }}">Download</a>.
+      This agreement needs to be signed by someone who has the authority to do so on behalf of your whole organisation. Typically this is a director of digital or head of finance.
+    </p>
+    <p>
+      Return a signed copy to <span style="white-space: nowrap">notify-support@digital.cabinet-office.gov.uk</span>
+    </p>
+    <p class="panel panel-border-wide bottom-gutter-2-3">
+      The agreement contains commercially sensitive information.<br>
+      Do not share it more widely than you need to.
+    </p>
+    <p>
+      <a href="{{ url_for('main.download_agreement') }}">Download the agreement</a>.
     </p>
 
   </div>