Except of course they're not the same width

app/views/layouts/organisations.html.erb

@@ -15,11 +15,7 @@
     { name: t('Users'), url: users_organisation_path(@organisation) },
   ]) %>
 
-  <div class="govuk-grid-row">
-    <div class="govuk-grid-column-two-thirds-from-desktop">
   <%= content_for?(:organisations_content) ? yield(:organisations_content) : yield %>
-    </div>
-  </div>
 <% end %>
 
 <%= render template: "layouts/application" %>

app/views/organisations/show.html.erb

@@ -1,3 +1,5 @@
+<div class="govuk-grid-row">
+  <div class="govuk-grid-column-two-thirds-from-desktop">
     <%= govuk_summary_list do |summary_list| %>
       <% @organisation.display_attributes.each do |attr, val| %>
         <%= summary_list.row do |row|
@@ -6,3 +8,5 @@
         end %>
       <% end %>
     <% end %>
+  </div>
+</div>