diff --git a/app/models/form.rb b/app/models/form.rb
index ce45da1d9..7e39b94aa 100644
--- a/app/models/form.rb
+++ b/app/models/form.rb
@@ -60,8 +60,8 @@ class Form
     page_index = page_ids.index(page.id)
     page_id = if page.id.include?("value_check") && log[page.questions[0].id] == 1 && page.routed_to?(log, current_user)
                 previous_page(page_ids, page_index, log, current_user)
-              elsif page.id == ("person_x_known")
-                "person_1_age"
+              elsif page.id == ("person_2_known")
+                "person_2_age"
               else
                 page_ids[page_index + 1]
               end
diff --git a/app/models/form/page.rb b/app/models/form/page.rb
index a04fe759d..5bf1e1618 100644
--- a/app/models/form/page.rb
+++ b/app/models/form/page.rb
@@ -41,8 +41,4 @@ private
       q.conditional_for.keys if q.type == "radio"
     }.compact
   end
-
-  def person_x_known_id
-    "person_x_known"
-  end
 end
diff --git a/app/models/form/sales/pages/person_x_known.rb b/app/models/form/sales/pages/person2_known.rb
similarity index 60%
rename from app/models/form/sales/pages/person_x_known.rb
rename to app/models/form/sales/pages/person2_known.rb
index 59931f951..c1eeebf20 100644
--- a/app/models/form/sales/pages/person_x_known.rb
+++ b/app/models/form/sales/pages/person2_known.rb
@@ -1,8 +1,8 @@
-class Form::Sales::Pages::PersonXKnown < ::Form::Page
+class Form::Sales::Pages::Person2Known < ::Form::Page
   def initialize(id, hsh, subsection)
     super
-    @id = person_x_known_id
-    @header_partial = "person_x_known_page"
+    @id = "person_2_known"
+    @header_partial = "person_2_known_page"
     @header = ""
     @description = ""
     @subsection = subsection
@@ -15,7 +15,7 @@ class Form::Sales::Pages::PersonXKnown < ::Form::Page
 
   def questions
     @questions ||= [
-      Form::Sales::Questions::PersonXKnown.new(nil, nil, self),
+      Form::Sales::Questions::Person2Known.new(nil, nil, self),
     ]
   end
 end
diff --git a/app/models/form/sales/pages/person3_known.rb b/app/models/form/sales/pages/person3_known.rb
new file mode 100644
index 000000000..60b344034
--- /dev/null
+++ b/app/models/form/sales/pages/person3_known.rb
@@ -0,0 +1,20 @@
+class Form::Sales::Pages::Person3Known < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "person_3_known"
+    @header_partial = "person_3_known_page"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+    @depends_on = [
+      { "hholdcount" => 3 },
+      { "hholdcount" => 4 },
+    ]
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::Person3Known.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/person_x_known.rb b/app/models/form/sales/questions/person2_known.rb
similarity index 70%
rename from app/models/form/sales/questions/person_x_known.rb
rename to app/models/form/sales/questions/person2_known.rb
index 6427be1e3..be298c3e5 100644
--- a/app/models/form/sales/questions/person_x_known.rb
+++ b/app/models/form/sales/questions/person2_known.rb
@@ -1,9 +1,9 @@
-class Form::Sales::Questions::PersonXKnown < ::Form::Question
+class Form::Sales::Questions::Person2Known < ::Form::Question
   def initialize(id, hsh, page)
     super
     @id = "details_known_2"
-    @check_answer_label = "Details known for person X"
-    @header = "Do you know the details for person X?"
+    @check_answer_label = "Details known for person 2"
+    @header = "Do you know the details for person 2?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
     @page = page
diff --git a/app/models/form/sales/questions/person3_known.rb b/app/models/form/sales/questions/person3_known.rb
new file mode 100644
index 000000000..e8caab40a
--- /dev/null
+++ b/app/models/form/sales/questions/person3_known.rb
@@ -0,0 +1,24 @@
+class Form::Sales::Questions::Person3Known < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "details_known_3"
+    @check_answer_label = "Details known for person 3"
+    @header = "Do you know the details for person 3?"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @page = page
+    @hint_text = ""
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        {
+          "details_known_3" => 1,
+        },
+      ],
+    }
+  end
+
+  ANSWER_OPTIONS = {
+    "1" => { "value" => "Yes" },
+    "2" => { "value" => "No" },
+  }.freeze
+end
diff --git a/app/models/form/sales/subsections/household_characteristics.rb b/app/models/form/sales/subsections/household_characteristics.rb
index c8a2012b0..1aed98ad6 100644
--- a/app/models/form/sales/subsections/household_characteristics.rb
+++ b/app/models/form/sales/subsections/household_characteristics.rb
@@ -29,8 +29,9 @@ class Form::Sales::Subsections::HouseholdCharacteristics < ::Form::Subsection
       Form::Sales::Pages::Buyer2LiveInProperty.new(nil, nil, self),
       Form::Sales::Pages::NumberOfOthersInProperty.new(nil, nil, self),
       Form::Sales::Pages::Person1Age.new(nil, nil, self),
+      Form::Sales::Pages::Person2Known.new(nil, nil, self),
       Form::Sales::Pages::Person2Age.new(nil, nil, self),
-      Form::Sales::Pages::PersonXKnown.new(nil, nil, self),
+      Form::Sales::Pages::Person3Known.new(nil, nil, self),
     ]
   end
 end
diff --git a/app/views/form/headers/_person_2_known_page.erb b/app/views/form/headers/_person_2_known_page.erb
new file mode 100644
index 000000000..197750515
--- /dev/null
+++ b/app/views/form/headers/_person_2_known_page.erb
@@ -0,0 +1 @@
+You have given us the details for 1 of the <%= hholdcount %> other people in the household
diff --git a/app/views/form/headers/_person_3_known_page.erb b/app/views/form/headers/_person_3_known_page.erb
new file mode 100644
index 000000000..7f2b33ee2
--- /dev/null
+++ b/app/views/form/headers/_person_3_known_page.erb
@@ -0,0 +1 @@
+You have given us the details for 2 of the <%= hholdcount %> other people in the household
diff --git a/app/views/form/headers/_person_x_known_page.erb b/app/views/form/headers/_person_x_known_page.erb
deleted file mode 100644
index 291d2b469..000000000
--- a/app/views/form/headers/_person_x_known_page.erb
+++ /dev/null
@@ -1 +0,0 @@
-You have given us the details for X of the <%= hholdcount %> other people in the household
diff --git a/app/views/form/page.html.erb b/app/views/form/page.html.erb
index 686e2d947..57296b5ba 100644
--- a/app/views/form/page.html.erb
+++ b/app/views/form/page.html.erb
@@ -17,7 +17,7 @@
             <span class="govuk-caption-l"><%= @subsection.label %></span>
           <% end %>
           <%if @page.header_partial.present? %>
-            <% @page.header = render partial: "form/headers/#{@page.header_partial}", locals: {hholdcount: @log.hholdcount} %>
+            <% @page.header = render partial: "form/headers/#{@page.header_partial}", locals: { hholdcount: @log.hholdcount } %>
           <% end %>
           <%= @page.header %>
         </h1>