diff --git a/packages/govuk-frontend/.htmlvalidate.js b/packages/govuk-frontend/.htmlvalidate.js
index ac4c9aee0a..e73bbd7e38 100644
--- a/packages/govuk-frontend/.htmlvalidate.js
+++ b/packages/govuk-frontend/.htmlvalidate.js
@@ -15,9 +15,15 @@ module.exports = {
     // Allow pattern attribute on input type="number"
     'input-attributes': 'off',
 
+    // Require input to have a label
+    'input-missing-label': 'error',
+
     // Allow inline styles for testing purposes
     'no-inline-style': 'off',
 
+    // Require all form field and ARIA references to exist
+    'no-missing-references': 'error',
+
     // Allow for explicit roles on regions that have implict roles
     // We do this to better support AT with older versions of IE that
     // have partial support for HTML5 semantic elements