diff --git a/client/src/entrypoints/contrib/typed_table_block/__snapshots__/typed_table_block.test.js.snap b/client/src/entrypoints/contrib/typed_table_block/__snapshots__/typed_table_block.test.js.snap
index aa39d95ee6..b223baba10 100644
--- a/client/src/entrypoints/contrib/typed_table_block/__snapshots__/typed_table_block.test.js.snap
+++ b/client/src/entrypoints/contrib/typed_table_block/__snapshots__/typed_table_block.test.js.snap
@@ -24,7 +24,7 @@ exports[`wagtail.contrib.typed_table_block.blocks.TypedTableBlock it renders cor
         <div class="typed-table-block__wrapper">
           <table>
             <thead>
-              <tr><th></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
+              <tr><th aria-hidden="true"></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
         <svg class="icon icon-plus icon" aria-hidden="true"><use href="#icon-plus"></use></svg>
       </button><input type="text" name="mytable-column-0-heading" class="column-heading" placeholder="Column heading"><button type="button" class="button button-secondary button-small button--icon text-replace no delete-column" aria-label="Delete column" title="Delete column">
         <svg class="icon icon-bin icon" aria-hidden="true"><use href="#icon-bin"></use></svg>
@@ -130,7 +130,7 @@ exports[`wagtail.contrib.typed_table_block.blocks.TypedTableBlock setError passe
         <div class="typed-table-block__wrapper">
           <table>
             <thead>
-              <tr><th></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
+              <tr><th aria-hidden="true"></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
         <svg class="icon icon-plus icon" aria-hidden="true"><use href="#icon-plus"></use></svg>
       </button><input type="text" name="mytable-column-0-heading" class="column-heading" placeholder="Column heading"><button type="button" class="button button-secondary button-small button--icon text-replace no delete-column" aria-label="Delete column" title="Delete column">
         <svg class="icon icon-bin icon" aria-hidden="true"><use href="#icon-bin"></use></svg>
@@ -236,7 +236,7 @@ exports[`wagtail.contrib.typed_table_block.blocks.TypedTableBlock setError shows
         <div class="typed-table-block__wrapper">
           <table>
             <thead>
-              <tr><th></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
+              <tr><th aria-hidden="true"></th><th><input type="hidden" name="mytable-column-0-type" value="test_block_a"><input type="hidden" name="mytable-column-0-order" value="0"><button type="button" class="button button-secondary button-small button--icon text-replace prepend-column" aria-label="Insert column" title="Insert column">
         <svg class="icon icon-plus icon" aria-hidden="true"><use href="#icon-plus"></use></svg>
       </button><input type="text" name="mytable-column-0-heading" class="column-heading" placeholder="Column heading"><button type="button" class="button button-secondary button-small button--icon text-replace no delete-column" aria-label="Delete column" title="Delete column">
         <svg class="icon icon-bin icon" aria-hidden="true"><use href="#icon-bin"></use></svg>
diff --git a/client/src/entrypoints/contrib/typed_table_block/typed_table_block.js b/client/src/entrypoints/contrib/typed_table_block/typed_table_block.js
index 16b4a8c894..d6e129545c 100644
--- a/client/src/entrypoints/contrib/typed_table_block/typed_table_block.js
+++ b/client/src/entrypoints/contrib/typed_table_block/typed_table_block.js
@@ -76,7 +76,7 @@ export class TypedTableBlock {
           <table>
             <thead>
               <tr>
-                <th></th>
+                <th aria-hidden="true"></th>
                 <th class="control-cell">
                   <button type="button" class="button button-small button-secondary append-column" data-append-column>
                     ${h(strings.ADD_COLUMN)}
diff --git a/wagtail/admin/templates/wagtailadmin/permissions/includes/collection_member_permissions_formset.html b/wagtail/admin/templates/wagtailadmin/permissions/includes/collection_member_permissions_formset.html
index 26364df596..2ea95a751b 100644
--- a/wagtail/admin/templates/wagtailadmin/permissions/includes/collection_member_permissions_formset.html
+++ b/wagtail/admin/templates/wagtailadmin/permissions/includes/collection_member_permissions_formset.html
@@ -26,7 +26,7 @@
                 {% for codename, short_label, long_label in formset.permission_types %}
                     <th title="{{ long_label }}">{{ short_label }}</th>
                 {% endfor %}
-                <th></th>
+                <th aria-hidden="true"></th>
             </tr>
         </thead>
         <tbody id="id_{{ formset.prefix }}-FORMS">
diff --git a/wagtail/admin/templates/wagtailadmin/workflows/includes/workflow_pages_formset.html b/wagtail/admin/templates/wagtailadmin/workflows/includes/workflow_pages_formset.html
index d8fbb55c96..10bead3c8d 100644
--- a/wagtail/admin/templates/wagtailadmin/workflows/includes/workflow_pages_formset.html
+++ b/wagtail/admin/templates/wagtailadmin/workflows/includes/workflow_pages_formset.html
@@ -17,7 +17,7 @@
     <thead>
         <tr>
             <th>{% trans "Page" %}</th>
-            <th></th>
+            <th aria-hidden="true"></th>
         </tr>
     </thead>
     <tbody id="id_{{ formset.prefix }}-FORMS">
diff --git a/wagtail/admin/ui/tables/pages.py b/wagtail/admin/ui/tables/pages.py
index c8693207f7..5403110cb8 100644
--- a/wagtail/admin/ui/tables/pages.py
+++ b/wagtail/admin/ui/tables/pages.py
@@ -81,7 +81,7 @@ class NavigateToChildrenColumn(BaseColumn):
         return context
 
     def render_header_html(self, parent_context):
-        return mark_safe("<th></th>")
+        return mark_safe("<th aria-hidden='true'></th>")
 
 
 class PageTable(Table):
diff --git a/wagtail/users/templates/wagtailusers/groups/includes/formatted_permissions.html b/wagtail/users/templates/wagtailusers/groups/includes/formatted_permissions.html
index 7d84cc8e96..de606b27f6 100644
--- a/wagtail/users/templates/wagtailusers/groups/includes/formatted_permissions.html
+++ b/wagtail/users/templates/wagtailusers/groups/includes/formatted_permissions.html
@@ -120,7 +120,7 @@
             <thead>
                 <tr>
                     <th>{% trans "Name" %}</th>
-                    <th></th>
+                    <th aria-hidden="true"></th>
                 </tr>
             </thead>
             <tbody>
diff --git a/wagtail/users/templates/wagtailusers/groups/includes/page_permissions_formset.html b/wagtail/users/templates/wagtailusers/groups/includes/page_permissions_formset.html
index 33a696f97b..eee73df606 100644
--- a/wagtail/users/templates/wagtailusers/groups/includes/page_permissions_formset.html
+++ b/wagtail/users/templates/wagtailusers/groups/includes/page_permissions_formset.html
@@ -25,7 +25,7 @@
                 {% for identifier, short_label, long_label in formset.permission_types %}
                     <th title="{{ long_label }}">{{ short_label }}</th>
                 {% endfor %}
-                <th></th>
+                <th aria-hidden="true"></th>
             </tr>
         </thead>
         <tbody id="id_{{ formset.prefix }}-FORMS">