diff --git a/app/assets/javascripts/validation.js b/app/assets/javascripts/validation.js
index bd556f0c4..f7bb4e6a9 100644
--- a/app/assets/javascripts/validation.js
+++ b/app/assets/javascripts/validation.js
@@ -7,13 +7,17 @@ function showError(input, errorElement, message) {
         errorElement.textContent = message;
     }, 10);
 
-    input.classList.add("usa-input--error");
+    if (input.type !== "radio" && input.type !== "checkbox") {
+        input.classList.add("usa-input--error");
+    }
     input.setAttribute("aria-describedby", errorElement.id);
 }
 
 function hideError(input, errorElement) {
     errorElement.style.display = "none";
-    input.classList.remove("usa-input--error");
+    if (input.type !== "radio" && input.type !== "checkbox") {
+        input.classList.remove("usa-input--error");
+    }
     input.removeAttribute("aria-describedby");
 }
 
@@ -24,13 +28,14 @@ function getFieldLabel(input) {
 
 // Attach validation logic to forms
 function attachValidation() {
-    const forms = document.querySelectorAll("form.send-one-off-form");
+    const forms = document.querySelectorAll('form[data-force-focus="True"]');
     forms.forEach((form) => {
         const inputs = form.querySelectorAll("input, textarea, select");
 
         form.addEventListener("submit", function (event) {
             let isValid = true;
             let firstInvalidInput = null;
+            const validatedRadioNames = new Set();
 
             inputs.forEach((input) => {
                 const errorId = input.id ? `${input.id}-error` : `${input.name}-error`;
@@ -41,16 +46,25 @@ function attachValidation() {
                     errorElement.id = errorId;
                     errorElement.classList.add("usa-error-message");
                     errorElement.setAttribute("aria-live", "polite");
-                    input.insertAdjacentElement("afterend", errorElement);
-                }
+                    if (input.type === "radio") {
+                        const group = form.querySelectorAll(`input[name="${input.name}"]`);
+                        const lastRadio = group[group.length - 1];
+                        lastRadio.parentElement.insertAdjacentElement("afterend", errorElement);
+                      } else {
+                        input.insertAdjacentElement("afterend", errorElement);
+                      }                }
 
                 if (input.type === "radio") {
+                    if (validatedRadioNames.has(input.name)) {
+                        return; // already validated this group
+                      }
+                      validatedRadioNames.add(input.name);
                     // Find all radio buttons with the same name
                     const radioGroup = document.querySelectorAll(`input[name="${input.name}"]`);
                     const isChecked = Array.from(radioGroup).some(radio => radio.checked);
 
                     if (!isChecked) {
-                        showError(input, errorElement, `Error: ${getFieldLabel(input)} must be selected.`);
+                        showError(input, errorElement, `Error: A selection must be made.`);
                         isValid = false;
                         if (!firstInvalidInput) {
                             firstInvalidInput = input;
@@ -73,11 +87,21 @@ function attachValidation() {
 
         inputs.forEach((input) => {
             input.addEventListener("input", function () {
-                const errorElement = document.getElementById(`${input.id}-error`);
-                if (input.value.trim() !== "" && errorElement) {
+                const errorElement = document.getElementById(input.id ? `${input.id}-error` : `${input.name}-error`);
+                if (errorElement && input.value.trim() !== "") {
                     hideError(input, errorElement);
                 }
             });
+
+            if (input.type === "radio") {
+                input.addEventListener("change", function () {
+                    console.log(`Radio ${input.id} changed`);
+
+                    const groupError = document.getElementById(`${input.name}-error`)
+                        || document.getElementById(`${input.id}-error`);
+                    if (groupError) hideError(input, groupError);
+                });
+            }
         });
     });
 }
diff --git a/app/main/forms.py b/app/main/forms.py
index 90a4409fc..c39e9afb9 100644
--- a/app/main/forms.py
+++ b/app/main/forms.py
@@ -781,6 +781,9 @@ def govuk_radios_field_widget(self, field, param_extensions=None, **kwargs):
     # returns either a list or a hierarchy of lists
     # depending on how get_items_from_options is implemented
     items = self.get_items_from_options(field)
+    is_field_required = False
+    if getattr(field, 'flags', None) and 'required' in field.flags:
+        is_field_required = True
 
     params = {
         "name": field.name,
@@ -793,6 +796,8 @@ def govuk_radios_field_widget(self, field, param_extensions=None, **kwargs):
         },
         "errorMessage": error_message,
         "items": items,
+        "required": is_field_required,
+
     }
 
     # extend default params with any sent in during instantiation
diff --git a/app/templates/components/components/radios/template.njk b/app/templates/components/components/radios/template.njk
index ef1054c5f..234a7a4ca 100644
--- a/app/templates/components/components/radios/template.njk
+++ b/app/templates/components/components/radios/template.njk
@@ -56,7 +56,6 @@
     {% set itemHintId = id + '-item-hint' %}
     <div class="usa-radio">
       <input class="usa-radio__input" id="{{ id }}" name="{{ params.name }}" type="radio" value="{{ item.value }}"
-      {{-" checked" if item.checked }}
       {{-" disabled" if item.disabled }}
       {%- if item.conditional %} data-aria-controls="{{ conditionalId }}"{% endif -%}
       {%- if hasHint %} aria-describedby="{{ itemHintId }}"{% endif -%}
diff --git a/app/templates/components/form.html b/app/templates/components/form.html
index 17cabc7f0..3a4b3a1a7 100644
--- a/app/templates/components/form.html
+++ b/app/templates/components/form.html
@@ -5,7 +5,8 @@
   class=None,
   id=None,
   module=None,
-  data_kwargs={}
+  data_kwargs={},
+  data_force_focus=False
 ) %}
   <form
     method="{{ method }}"
@@ -19,6 +20,7 @@
         data-{{ key }}="{{ val }}"
       {% endif %}
     {% endfor %}
+    {% if data_force_focus %}data-force-focus="{{ data_force_focus }}"{% endif %}
     novalidate
   >
     {{ caller() }}
diff --git a/app/templates/views/add-service.html b/app/templates/views/add-service.html
index d0f4f98d9..ca37aa520 100644
--- a/app/templates/views/add-service.html
+++ b/app/templates/views/add-service.html
@@ -14,7 +14,7 @@
 
     {{ page_header('About your service') }}
 
-    {% call form_wrapper() %}
+    {% call form_wrapper(data_force_focus=True) %}
 
       {{ form.name(param_extensions={"hint": {"text": "You can change this later"}}) }}
 
diff --git a/app/templates/views/edit-sms-template.html b/app/templates/views/edit-sms-template.html
index fdc15af5d..87dba61e4 100644
--- a/app/templates/views/edit-sms-template.html
+++ b/app/templates/views/edit-sms-template.html
@@ -27,7 +27,7 @@
       {% set content_hint = 'Your service name will be added to the start of your message. You can turn this off in Settings.' %}
     {% endif %}
 
-    {% call form_wrapper() %}
+    {% call form_wrapper(data_force_focus=True) %}
       <div class="grid-container padding-0">
         <div class="tablet:grid-col-9 mobile-lg:grid-col-12">
           {{ form.name(param_extensions={
diff --git a/app/templates/views/send-test.html b/app/templates/views/send-test.html
index faa71873b..3f1161f6b 100644
--- a/app/templates/views/send-test.html
+++ b/app/templates/views/send-test.html
@@ -34,7 +34,8 @@
   {% call form_wrapper(
     class='js-stick-at-top-when-scrolling send-one-off-form' if template.template_type != 'sms' else 'send-one-off-form',
     module="autofocus",
-    data_kwargs={'force-focus': True}
+    data_kwargs={'force-focus': True},
+    data_force_focus=True
   ) %}
     <div class="grid-row">
       {% set extra_class = "extra-tracking" if form.placeholder_value.label.text == "phone number" else "" %}
diff --git a/app/templates/views/service-settings/link-service-to-organization.html b/app/templates/views/service-settings/link-service-to-organization.html
index 89ff79f5a..222c3951f 100644
--- a/app/templates/views/service-settings/link-service-to-organization.html
+++ b/app/templates/views/service-settings/link-service-to-organization.html
@@ -24,7 +24,7 @@
     label='Search by name',
     autofocus=True
   ) }}
-  {% call form_wrapper() %}
+  {% call form_wrapper(data_force_focus=True) %}
     {% if has_organizations %}
       {{ form.organizations }}
       {{ sticky_page_footer('Save') }}
diff --git a/app/templates/views/service-settings/set-international-sms.html b/app/templates/views/service-settings/set-international-sms.html
index 7475315ef..69ef92efa 100644
--- a/app/templates/views/service-settings/set-international-sms.html
+++ b/app/templates/views/service-settings/set-international-sms.html
@@ -24,7 +24,7 @@
         See <a class="usa-link" href="{{ url_for(".pricing") }}">pricing</a> for the list
         of rates.
       </p>
-      {% call form_wrapper() %}
+      {% call form_wrapper(data_force_focus=True) %}
         {{ form.enabled }}
         {{ page_footer('Save') }}
       {% endcall %}
diff --git a/app/templates/views/service-settings/set-sms.html b/app/templates/views/service-settings/set-sms.html
index a48fb68b6..7f27786ce 100644
--- a/app/templates/views/service-settings/set-sms.html
+++ b/app/templates/views/service-settings/set-sms.html
@@ -20,12 +20,7 @@
       <p>
         You may send up to 250,000 text messages during the pilot period.
       </p>
-      <!--<p>
-        You have a free allowance of
-        {{ '{:,}'.format(current_service.free_sms_fragment_limit) }} text messages each
-        financial year.
-      </p>-->
-      {% call form_wrapper() %}
+      {% call form_wrapper(data_force_focus=True) %}
         {{ form.enabled }}
         {{ page_footer('Save') }}
       {% endcall %}
diff --git a/app/templates/views/service-settings/sms-prefix.html b/app/templates/views/service-settings/sms-prefix.html
index 266278d2d..4a31ab384 100644
--- a/app/templates/views/service-settings/sms-prefix.html
+++ b/app/templates/views/service-settings/sms-prefix.html
@@ -16,7 +16,7 @@
 
   {{ page_header('Start text messages with service name') }}
 
-  {% call form_wrapper() %}
+  {% call form_wrapper(data_force_focus=True) %}
     {{ form.enabled }}
     {{ page_footer('Save') }}
   {% endcall %}
diff --git a/app/templates/views/service-settings/sms-sender/add.html b/app/templates/views/service-settings/sms-sender/add.html
index c310ee9cf..c97e42e2d 100644
--- a/app/templates/views/service-settings/sms-sender/add.html
+++ b/app/templates/views/service-settings/sms-sender/add.html
@@ -16,7 +16,7 @@
 
   {{ page_header('Add text message sender') }}
 
-  {% call form_wrapper() %}
+  {% call form_wrapper(data_force_focus=True) %}
     {{ form.sms_sender(param_extensions={
       "hint": {"text": "Up to 11 characters, letters, numbers and spaces only"}
     }) }}
diff --git a/app/templates/views/service-settings/sms-sender/edit.html b/app/templates/views/service-settings/sms-sender/edit.html
index 85bc352c9..9b7556cb4 100644
--- a/app/templates/views/service-settings/sms-sender/edit.html
+++ b/app/templates/views/service-settings/sms-sender/edit.html
@@ -18,7 +18,7 @@
 {% block maincolumn_content %}
 
   {{ page_header('Change text message sender') }}
-  {% call form_wrapper() %}
+  {% call form_wrapper(data_force_focus=True) %}
     {% if inbound_number %}
       <p>
         <span class="bottom-gutter-1-3"> {{ sms_sender.sms_sender }} </span>