diff --git a/app/models/form/sales/pages/person1_age.rb b/app/models/form/sales/pages/person1_age.rb
index f297e656f..d37533683 100644
--- a/app/models/form/sales/pages/person1_age.rb
+++ b/app/models/form/sales/pages/person1_age.rb
@@ -6,10 +6,7 @@ class Form::Sales::Pages::Person1Age < ::Form::Page
     @description = ""
     @subsection = subsection
     @depends_on = [
-      { "hholdcount" => 1 },
-      { "hholdcount" => 2 },
-      { "hholdcount" => 3 },
-      { "hholdcount" => 4 },
+      { "details_known_1" => 1 },
     ]
   end
 
diff --git a/app/models/form/sales/pages/person1_gender_identity.rb b/app/models/form/sales/pages/person1_gender_identity.rb
index 8a5504397..3e6bde9bc 100644
--- a/app/models/form/sales/pages/person1_gender_identity.rb
+++ b/app/models/form/sales/pages/person1_gender_identity.rb
@@ -6,10 +6,7 @@ class Form::Sales::Pages::Person1GenderIdentity < ::Form::Page
     @description = ""
     @subsection = subsection
     @depends_on = [
-      { "hholdcount" => 1, "jointpur" => 2 },
-      { "hholdcount" => 2, "jointpur" => 2 },
-      { "hholdcount" => 3, "jointpur" => 2 },
-      { "hholdcount" => 4, "jointpur" => 2 },
+      { "details_known_1" => 1, "jointpur" => 2 },
     ]
   end
 
diff --git a/app/models/form/sales/pages/person1_gender_identity_joint_purchase.rb b/app/models/form/sales/pages/person1_gender_identity_joint_purchase.rb
index 8e714266d..4e9cca219 100644
--- a/app/models/form/sales/pages/person1_gender_identity_joint_purchase.rb
+++ b/app/models/form/sales/pages/person1_gender_identity_joint_purchase.rb
@@ -6,10 +6,7 @@ class Form::Sales::Pages::Person1GenderIdentityJointPurchase < ::Form::Page
     @description = ""
     @subsection = subsection
     @depends_on = [
-      { "hholdcount" => 1, "jointpur" => 1 },
-      { "hholdcount" => 2, "jointpur" => 1 },
-      { "hholdcount" => 3, "jointpur" => 1 },
-      { "hholdcount" => 4, "jointpur" => 1 },
+      { "details_known_1" => 1, "jointpur" => 1 },
     ]
   end
 
diff --git a/app/models/form/sales/pages/person1_known.rb b/app/models/form/sales/pages/person1_known.rb
new file mode 100644
index 000000000..315dc5f02
--- /dev/null
+++ b/app/models/form/sales/pages/person1_known.rb
@@ -0,0 +1,22 @@
+class Form::Sales::Pages::Person1Known < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "person_1_known"
+    @header_partial = "person_1_known_page"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+    @depends_on = [
+      { "hholdcount" => 1 },
+      { "hholdcount" => 2 },
+      { "hholdcount" => 3 },
+      { "hholdcount" => 4 },
+    ]
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::Person1Known.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/pages/person2_known.rb b/app/models/form/sales/pages/person2_known.rb
index c1eeebf20..eb29c1cfd 100644
--- a/app/models/form/sales/pages/person2_known.rb
+++ b/app/models/form/sales/pages/person2_known.rb
@@ -7,9 +7,9 @@ class Form::Sales::Pages::Person2Known < ::Form::Page
     @description = ""
     @subsection = subsection
     @depends_on = [
-      { "hholdcount" => 2 },
-      { "hholdcount" => 3 },
-      { "hholdcount" => 4 },
+      { "hholdcount" => 2, "details_known_1" => 1  },
+      { "hholdcount" => 3, "details_known_1" => 1  },
+      { "hholdcount" => 4, "details_known_1" => 1  },
     ]
   end
 
diff --git a/app/models/form/sales/questions/person1_known.rb b/app/models/form/sales/questions/person1_known.rb
new file mode 100644
index 000000000..6f7590101
--- /dev/null
+++ b/app/models/form/sales/questions/person1_known.rb
@@ -0,0 +1,25 @@
+class Form::Sales::Questions::Person1Known < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "details_known_1"
+    @check_answer_label = "Details known for person 1?"
+    @header = "Do you know the details for person 1?"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @page = page
+    @hint_text = ""
+    @hidden_in_check_answers = {
+      "depends_on" => [
+        {
+          "details_known_1" => 1,
+        },
+      ],
+    }
+    @check_answers_card_number = 3
+  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 541b7734b..a2232caa2 100644
--- a/app/models/form/sales/subsections/household_characteristics.rb
+++ b/app/models/form/sales/subsections/household_characteristics.rb
@@ -28,6 +28,7 @@ class Form::Sales::Subsections::HouseholdCharacteristics < ::Form::Subsection
       Form::Sales::Pages::Buyer2WorkingSituation.new(nil, nil, self),
       Form::Sales::Pages::Buyer2LiveInProperty.new(nil, nil, self),
       Form::Sales::Pages::NumberOfOthersInProperty.new(nil, nil, self),
+      Form::Sales::Pages::Person1Known.new(nil, nil, self),
       Form::Sales::Pages::Person1Age.new(nil, nil, self),
       Form::Sales::Pages::Person1GenderIdentity.new(nil, nil, self),
       Form::Sales::Pages::Person1GenderIdentityJointPurchase.new(nil, nil, self),
diff --git a/app/views/form/headers/_person_1_known_page.erb b/app/views/form/headers/_person_1_known_page.erb
new file mode 100644
index 000000000..b179fcdb8
--- /dev/null
+++ b/app/views/form/headers/_person_1_known_page.erb
@@ -0,0 +1 @@
+You have given us the details for 0 of the <%= log.hholdcount %> other people in the household
diff --git a/db/migrate/20221212161657_add_details_known1_to_sales_log.rb b/db/migrate/20221212161657_add_details_known1_to_sales_log.rb
new file mode 100644
index 000000000..0b0799abd
--- /dev/null
+++ b/db/migrate/20221212161657_add_details_known1_to_sales_log.rb
@@ -0,0 +1,5 @@
+class AddDetailsKnown1ToSalesLog < ActiveRecord::Migration[7.0]
+  change_table :sales_logs, bulk: true do |t|
+    t.column :details_known_1, :integer
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 501f738aa..f16ab6d9d 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2022_12_07_113235) do
+ActiveRecord::Schema[7.0].define(version: 2022_12_12_161657) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -403,6 +403,7 @@ ActiveRecord::Schema[7.0].define(version: 2022_12_07_113235) do
     t.integer "savingsnk"
     t.integer "savings"
     t.string "sex3"
+    t.integer "details_known_1"
     t.index ["created_by_id"], name: "index_sales_logs_on_created_by_id"
     t.index ["managing_organisation_id"], name: "index_sales_logs_on_managing_organisation_id"
     t.index ["owning_organisation_id"], name: "index_sales_logs_on_owning_organisation_id"
diff --git a/spec/factories/sales_log.rb b/spec/factories/sales_log.rb
index 2e6729a4f..945b58201 100644
--- a/spec/factories/sales_log.rb
+++ b/spec/factories/sales_log.rb
@@ -39,6 +39,7 @@ FactoryBot.define do
       ecstat2 { "1" }
       hholdcount { "1" }
       wheel { 1 }
+      details_known_1 { 1 }
       age3_known { 0 }
       age3 { 40 }
       details_known_2 { 1 }
diff --git a/spec/models/form/sales/pages/person1_age_spec.rb b/spec/models/form/sales/pages/person1_age_spec.rb
index 38f4ac039..553a7cff4 100644
--- a/spec/models/form/sales/pages/person1_age_spec.rb
+++ b/spec/models/form/sales/pages/person1_age_spec.rb
@@ -30,10 +30,7 @@ RSpec.describe Form::Sales::Pages::Person1Age, type: :model do
   it "has correct depends_on" do
     expect(page.depends_on).to eq(
       [
-        { "hholdcount" => 1 },
-        { "hholdcount" => 2 },
-        { "hholdcount" => 3 },
-        { "hholdcount" => 4 },
+        { "details_known_1" => 1 },
       ],
     )
   end
diff --git a/spec/models/form/sales/pages/person1_gender_identity_joint_purchase_spec.rb b/spec/models/form/sales/pages/person1_gender_identity_joint_purchase_spec.rb
index 1b0bfdc52..94975b2e3 100644
--- a/spec/models/form/sales/pages/person1_gender_identity_joint_purchase_spec.rb
+++ b/spec/models/form/sales/pages/person1_gender_identity_joint_purchase_spec.rb
@@ -28,9 +28,6 @@ RSpec.describe Form::Sales::Pages::Person1GenderIdentityJointPurchase, type: :mo
   end
 
   it "has correct depends_on" do
-    expect(page.depends_on).to eq([{ "hholdcount" => 1, "jointpur" => 1 },
-                                   { "hholdcount" => 2, "jointpur" => 1 },
-                                   { "hholdcount" => 3, "jointpur" => 1 },
-                                   { "hholdcount" => 4, "jointpur" => 1 }])
+    expect(page.depends_on).to eq([{ "details_known_1" => 1, "jointpur" => 1 }])
   end
 end
diff --git a/spec/models/form/sales/pages/person1_gender_identity_spec.rb b/spec/models/form/sales/pages/person1_gender_identity_spec.rb
index 54a8eaf4f..ac63a1da7 100644
--- a/spec/models/form/sales/pages/person1_gender_identity_spec.rb
+++ b/spec/models/form/sales/pages/person1_gender_identity_spec.rb
@@ -28,11 +28,6 @@ RSpec.describe Form::Sales::Pages::Person1GenderIdentity, type: :model do
   end
 
   it "has correct depends_on" do
-    expect(page.depends_on).to eq([
-      { "hholdcount" => 1, "jointpur" => 2 },
-      { "hholdcount" => 2, "jointpur" => 2 },
-      { "hholdcount" => 3, "jointpur" => 2 },
-      { "hholdcount" => 4, "jointpur" => 2 },
-    ])
+    expect(page.depends_on).to eq([{ "details_known_1" => 1, "jointpur" => 2 }])
   end
 end
diff --git a/spec/models/form/sales/pages/person1_known_spec.rb b/spec/models/form/sales/pages/person1_known_spec.rb
new file mode 100644
index 000000000..9353b82aa
--- /dev/null
+++ b/spec/models/form/sales/pages/person1_known_spec.rb
@@ -0,0 +1,44 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::Person1Known, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { nil }
+  let(:page_definition) { nil }
+  let(:subsection) { instance_double(Form::Subsection) }
+
+  it "has correct subsection" do
+    expect(page.subsection).to eq(subsection)
+  end
+
+  it "has correct questions" do
+    expect(page.questions.map(&:id)).to eq(%w[details_known_1])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("person_1_known")
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("")
+  end
+
+  it "has the correct header_partial" do
+    expect(page.header_partial).to eq("person_1_known_page")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+
+  it "has correct depends_on" do
+    expect(page.depends_on).to eq(
+      [
+        { "hholdcount" => 1 },
+        { "hholdcount" => 2 },
+        { "hholdcount" => 3 },
+        { "hholdcount" => 4 },
+      ],
+    )
+  end
+end
diff --git a/spec/models/form/sales/pages/person2_known_spec.rb b/spec/models/form/sales/pages/person2_known_spec.rb
index 57bac950f..46ab592de 100644
--- a/spec/models/form/sales/pages/person2_known_spec.rb
+++ b/spec/models/form/sales/pages/person2_known_spec.rb
@@ -34,9 +34,9 @@ RSpec.describe Form::Sales::Pages::Person2Known, type: :model do
   it "has correct depends_on" do
     expect(page.depends_on).to eq(
       [
-        { "hholdcount" => 2 },
-        { "hholdcount" => 3 },
-        { "hholdcount" => 4 },
+        { "hholdcount" => 2, "details_known_1" => 1  },
+        { "hholdcount" => 3, "details_known_1" => 1  },
+        { "hholdcount" => 4, "details_known_1" => 1  },
       ],
     )
   end
diff --git a/spec/models/form/sales/questions/person1_known_spec.rb b/spec/models/form/sales/questions/person1_known_spec.rb
new file mode 100644
index 000000000..e1207ea1b
--- /dev/null
+++ b/spec/models/form/sales/questions/person1_known_spec.rb
@@ -0,0 +1,64 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::Person1Known, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { nil }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq("details_known_1")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("Do you know the details for person 1?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Details known for person 1?")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("radio")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct answer_options" do
+    expect(question.answer_options).to eq({
+      "1" => { "value" => "Yes" },
+      "2" => { "value" => "No" },
+    })
+  end
+
+  it "has correct conditional for" do
+    expect(question.conditional_for).to eq(nil)
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to eq("")
+  end
+
+  it "has the correct hidden_in_check_answers" do
+    expect(question.hidden_in_check_answers).to eq(
+      {
+        "depends_on" => [
+          {
+            "details_known_1" => 1,
+          },
+        ],
+      },
+    )
+  end
+
+  it "has the correct check_answers_card_number" do
+    expect(question.check_answers_card_number).to eq(3)
+  end
+end
diff --git a/spec/models/form/sales/subsections/household_characteristics_spec.rb b/spec/models/form/sales/subsections/household_characteristics_spec.rb
index 0146e9aea..63c27291f 100644
--- a/spec/models/form/sales/subsections/household_characteristics_spec.rb
+++ b/spec/models/form/sales/subsections/household_characteristics_spec.rb
@@ -33,6 +33,7 @@ RSpec.describe Form::Sales::Subsections::HouseholdCharacteristics, type: :model
         buyer_2_working_situation
         buyer_2_live_in_property
         number_of_others_in_property
+        person_1_known
         person_1_age
         person_1_gender_identity
         person_1_gender_identity_joint_purchase
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index fe979ac27..c328d6ad0 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -52,14 +52,14 @@ RSpec.describe FormHandler do
     it "is able to load a current sales form" do
       form = form_handler.get_form("current_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(50)
+      expect(form.pages.count).to eq(51)
       expect(form.name).to eq("2022_2023_sales")
     end
 
     it "is able to load a previous sales form" do
       form = form_handler.get_form("previous_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(50)
+      expect(form.pages.count).to eq(51)
       expect(form.name).to eq("2021_2022_sales")
     end
   end