diff --git a/schemes/views/schemes/milestones.py b/schemes/views/schemes/milestones.py
index 76699037..537771f6 100644
--- a/schemes/views/schemes/milestones.py
+++ b/schemes/views/schemes/milestones.py
@@ -146,10 +146,6 @@ class ChangeMilestoneDatesForm(FlaskForm):  # type: ignore
         required_message="Enter a construction completed planned date",
         invalid_message="Construction completed planned date must be a real date",
     )
-    construction_completed_actual = MilestoneDateField(
-        required_message="Enter a construction completed actual date",
-        invalid_message="Construction completed actual date must be a real date",
-    )
 
     @classmethod
     def from_domain(cls, milestones: SchemeMilestones) -> ChangeMilestoneDatesForm:
@@ -181,9 +177,6 @@ def from_domain(cls, milestones: SchemeMilestones) -> ChangeMilestoneDatesForm:
             construction_completed_planned=milestones.get_current_status_date(
                 Milestone.CONSTRUCTION_COMPLETED, ObservationType.PLANNED
             ),
-            construction_completed_actual=milestones.get_current_status_date(
-                Milestone.CONSTRUCTION_COMPLETED, ObservationType.ACTUAL
-            ),
         )
 
     def update_domain(self, milestones: SchemeMilestones, now: datetime) -> None:
@@ -213,11 +206,7 @@ def update_milestone(planned: date | None, actual: date | None, milestone: Miles
             self.construction_started_actual.data,
             Milestone.CONSTRUCTION_STARTED,
         )
-        update_milestone(
-            self.construction_completed_planned.data,
-            self.construction_completed_actual.data,
-            Milestone.CONSTRUCTION_COMPLETED,
-        )
+        update_milestone(self.construction_completed_planned.data, None, Milestone.CONSTRUCTION_COMPLETED)
 
 
 @dataclass(frozen=True)
diff --git a/schemes/views/templates/scheme/milestones.html b/schemes/views/templates/scheme/milestones.html
index df0591f6..57a6b29a 100644
--- a/schemes/views/templates/scheme/milestones.html
+++ b/schemes/views/templates/scheme/milestones.html
@@ -44,7 +44,7 @@ <h1 class="govuk-heading-l govuk-!-margin-bottom-3">Change milestone dates</h1>
                 {{ milestone("Preliminary design completed", form.preliminary_design_completed_planned, form.preliminary_design_completed_actual) }}
                 {{ milestone("Detailed design completed", form.detailed_design_completed_planned, form.detailed_design_completed_actual) }}
                 {{ milestone("Construction started", form.construction_started_planned, form.construction_started_actual) }}
-                {{ milestone("Construction completed", form.construction_completed_planned, form.construction_completed_actual) }}
+                {{ milestone("Construction completed", form.construction_completed_planned, None) }}
 
                 <div class="govuk-button-group">
                     {{ govukButton({
@@ -71,15 +71,17 @@ <h2 class="govuk-heading-m">{{ name }}</h2>
                 }
             }) }}
         </div>
-        <div class="govuk-grid-column-one-half">
-            {{ actual_field(params={
-                "fieldset": {
-                    "describedBy": "date-hint",
-                    "legend": {
-                        "text": "Actual date"
+        {% if actual_field %}
+            <div class="govuk-grid-column-one-half">
+                {{ actual_field(params={
+                    "fieldset": {
+                        "describedBy": "date-hint",
+                        "legend": {
+                            "text": "Actual date"
+                        }
                     }
-                }
-            }) }}
-        </div>
+                }) }}
+            </div>
+        {% endif %}
     </div>
 {%- endmacro %}
diff --git a/tests/integration/pages.py b/tests/integration/pages.py
index 178461bc..61c4ec66 100644
--- a/tests/integration/pages.py
+++ b/tests/integration/pages.py
@@ -399,7 +399,8 @@ def __init__(self, heading: Tag):
         grid_row = heading.find_next_sibling("div", class_="govuk-grid-row")
         assert isinstance(grid_row, Tag)
         self.planned = DateComponent(one(grid_row.select("fieldset:has(legend:-soup-contains('Planned date'))")))
-        self.actual = DateComponent(one(grid_row.select("fieldset:has(legend:-soup-contains('Actual date'))")))
+        actual_tag = grid_row.select_one("fieldset:has(legend:-soup-contains('Actual date'))")
+        self.actual = DateComponent(actual_tag) if actual_tag else None
 
 
 class DateComponent:
diff --git a/tests/integration/test_scheme_milestones.py b/tests/integration/test_scheme_milestones.py
index 40518270..4735bdea 100644
--- a/tests/integration/test_scheme_milestones.py
+++ b/tests/integration/test_scheme_milestones.py
@@ -151,20 +151,24 @@ def test_milestones_form_shows_fields(self, schemes: SchemeRepository, client: F
         assert (
             change_milestone_dates_page.form.feasibility_design_completed.planned.name
             == "feasibility_design_completed_planned"
+            and change_milestone_dates_page.form.feasibility_design_completed.actual
             and change_milestone_dates_page.form.feasibility_design_completed.actual.name
             == "feasibility_design_completed_actual"
             and change_milestone_dates_page.form.preliminary_design_completed.planned.name
             == "preliminary_design_completed_planned"
+            and change_milestone_dates_page.form.preliminary_design_completed.actual
             and change_milestone_dates_page.form.preliminary_design_completed.actual.name
             == "preliminary_design_completed_actual"
             and change_milestone_dates_page.form.detailed_design_completed.planned.name
             == "detailed_design_completed_planned"
+            and change_milestone_dates_page.form.detailed_design_completed.actual
             and change_milestone_dates_page.form.detailed_design_completed.actual.name
             == "detailed_design_completed_actual"
             and change_milestone_dates_page.form.construction_started.planned.name == "construction_started_planned"
+            and change_milestone_dates_page.form.construction_started.actual
             and change_milestone_dates_page.form.construction_started.actual.name == "construction_started_actual"
             and change_milestone_dates_page.form.construction_completed.planned.name == "construction_completed_planned"
-            and change_milestone_dates_page.form.construction_completed.actual.name == "construction_completed_actual"
+            and change_milestone_dates_page.form.construction_completed.actual is None
         )
 
     def test_milestones_form_shows_date(self, schemes: SchemeRepository, client: FlaskClient) -> None:
@@ -174,7 +178,7 @@ def test_milestones_form_shows_date(self, schemes: SchemeRepository, client: Fla
                 id_=1,
                 effective=DateRange(datetime(2020, 1, 1, 12), None),
                 milestone=Milestone.CONSTRUCTION_STARTED,
-                observation_type=ObservationType.ACTUAL,
+                observation_type=ObservationType.PLANNED,
                 status_date=date(2020, 1, 2),
                 source=DataSource.ATF4_BID,
             )
@@ -184,7 +188,7 @@ def test_milestones_form_shows_date(self, schemes: SchemeRepository, client: Fla
         change_milestone_dates_page = ChangeMilestoneDatesPage.open(client, id_=1)
 
         assert change_milestone_dates_page.title == "Update your capital schemes - Active Travel England - GOV.UK"
-        assert change_milestone_dates_page.form.construction_started.actual.value == "2 1 2020"
+        assert change_milestone_dates_page.form.construction_started.planned.value == "2 1 2020"
 
     def test_milestones_form_shows_confirm(self, schemes: SchemeRepository, client: FlaskClient) -> None:
         schemes.add(build_scheme(id_=1, name="Wirral Package", authority_id=1))
@@ -234,7 +238,7 @@ def test_milestones_updates_milestones(
                 id_=1,
                 effective=DateRange(datetime(2020, 1, 1, 12), None),
                 milestone=Milestone.CONSTRUCTION_STARTED,
-                observation_type=ObservationType.ACTUAL,
+                observation_type=ObservationType.PLANNED,
                 status_date=date(2020, 1, 2),
                 source=DataSource.ATF4_BID,
             )
@@ -242,7 +246,7 @@ def test_milestones_updates_milestones(
         schemes.add(scheme)
 
         client.post(
-            "/schemes/1/milestones", data={"csrf_token": csrf_token, "construction_started_actual": ["3", "1", "2020"]}
+            "/schemes/1/milestones", data={"csrf_token": csrf_token, "construction_started_planned": ["3", "1", "2020"]}
         )
 
         actual_scheme = schemes.get(1)
@@ -254,7 +258,7 @@ def test_milestones_updates_milestones(
         assert (
             milestone_revision2.effective == DateRange(datetime(2020, 2, 1, 13), None)
             and milestone_revision2.milestone == Milestone.CONSTRUCTION_STARTED
-            and milestone_revision2.observation_type == ObservationType.ACTUAL
+            and milestone_revision2.observation_type == ObservationType.PLANNED
             and milestone_revision2.status_date == date(2020, 1, 3)
             and milestone_revision2.source == DataSource.AUTHORITY_UPDATE
         )
@@ -275,7 +279,7 @@ def test_cannot_milestones_when_error(
                 id_=1,
                 effective=DateRange(datetime(2020, 1, 1, 12), None),
                 milestone=Milestone.CONSTRUCTION_STARTED,
-                observation_type=ObservationType.ACTUAL,
+                observation_type=ObservationType.PLANNED,
                 status_date=date(2020, 1, 2),
                 source=DataSource.ATF4_BID,
             )
@@ -286,7 +290,7 @@ def test_cannot_milestones_when_error(
             client.post(
                 "/schemes/1/milestones",
                 data=self.empty_change_milestone_dates_form()
-                | {"csrf_token": csrf_token, "construction_started_actual": ["x", "x", "x"]},
+                | {"csrf_token": csrf_token, "construction_started_planned": ["x", "x", "x"]},
             )
         )
 
@@ -294,13 +298,13 @@ def test_cannot_milestones_when_error(
             change_milestone_dates_page.title == "Error: Update your capital schemes - Active Travel England - GOV.UK"
         )
         assert change_milestone_dates_page.errors and list(change_milestone_dates_page.errors) == [
-            "Construction started actual date must be a real date"
+            "Construction started planned date must be a real date"
         ]
         assert (
-            change_milestone_dates_page.form.construction_started.actual.is_errored
-            and change_milestone_dates_page.form.construction_started.actual.error
-            == "Error: Construction started actual date must be a real date"
-            and change_milestone_dates_page.form.construction_started.actual.value == "x x x"
+            change_milestone_dates_page.form.construction_started.planned.is_errored
+            and change_milestone_dates_page.form.construction_started.planned.error
+            == "Error: Construction started planned date must be a real date"
+            and change_milestone_dates_page.form.construction_started.planned.value == "x x x"
         )
         actual_scheme = schemes.get(1)
         assert actual_scheme
@@ -310,7 +314,7 @@ def test_cannot_milestones_when_error(
             milestone_revision1.id == 1
             and milestone_revision1.effective == DateRange(datetime(2020, 1, 1, 12), None)
             and milestone_revision1.milestone == Milestone.CONSTRUCTION_STARTED
-            and milestone_revision1.observation_type == ObservationType.ACTUAL
+            and milestone_revision1.observation_type == ObservationType.PLANNED
             and milestone_revision1.status_date == date(2020, 1, 2)
             and milestone_revision1.source == DataSource.ATF4_BID
         )
@@ -381,5 +385,4 @@ def empty_change_milestone_dates_form(self) -> dict[str, list[str]]:
             "construction_started_planned": empty_date,
             "construction_started_actual": empty_date,
             "construction_completed_planned": empty_date,
-            "construction_completed_actual": empty_date,
         }
diff --git a/tests/views/schemes/test_milestones.py b/tests/views/schemes/test_milestones.py
index d963d198..f04ee78e 100644
--- a/tests/views/schemes/test_milestones.py
+++ b/tests/views/schemes/test_milestones.py
@@ -177,7 +177,6 @@ class TestChangeMilestoneDatesForm:
         "construction_started_planned",
         "construction_started_actual",
         "construction_completed_planned",
-        "construction_completed_actual",
     ]
     field_names_milestones_observation_types = [
         ("feasibility_design_completed_planned", Milestone.FEASIBILITY_DESIGN_COMPLETED, ObservationType.PLANNED),
@@ -189,7 +188,6 @@ class TestChangeMilestoneDatesForm:
         ("construction_started_planned", Milestone.CONSTRUCTION_STARTED, ObservationType.PLANNED),
         ("construction_started_actual", Milestone.CONSTRUCTION_STARTED, ObservationType.ACTUAL),
         ("construction_completed_planned", Milestone.CONSTRUCTION_COMPLETED, ObservationType.PLANNED),
-        ("construction_completed_actual", Milestone.CONSTRUCTION_COMPLETED, ObservationType.ACTUAL),
     ]
 
     @pytest.mark.parametrize("field_name, milestone, observation_type", field_names_milestones_observation_types)
@@ -233,7 +231,6 @@ def test_from_domain_when_minimal(self) -> None:
             and form.construction_started_planned.data is None
             and form.construction_started_actual.data is None
             and form.construction_completed_planned.data is None
-            and form.construction_completed_actual.data is None
         )
 
     @pytest.mark.parametrize("field_name, milestone, observation_type", field_names_milestones_observation_types)
@@ -329,6 +326,22 @@ def test_update_domain_ignores_unchanged_dates(
             and milestone_revision1.source == DataSource.ATF4_BID
         )
 
+    def test_update_domain_ignores_construction_completed_actual_date(self) -> None:
+        form = ChangeMilestoneDatesForm(
+            formdata=MultiDict(
+                [
+                    ("construction_completed_actual", "2"),
+                    ("construction_completed_actual", "1"),
+                    ("construction_completed_actual", "2020"),
+                ]
+            )
+        )
+        milestones = SchemeMilestones()
+
+        form.update_domain(milestones, now=datetime(2020, 2, 1, 13))
+
+        assert not milestones.milestone_revisions
+
     @pytest.mark.parametrize("field_name", field_names)
     def test_no_errors_when_valid(self, field_name: str) -> None:
         form = ChangeMilestoneDatesForm(
@@ -361,7 +374,6 @@ def test_date_without_initial_value_is_optional(self, field_name: str) -> None:
             ("construction_started_planned", "Enter a construction started planned date"),
             ("construction_started_actual", "Enter a construction started actual date"),
             ("construction_completed_planned", "Enter a construction completed planned date"),
-            ("construction_completed_actual", "Enter a construction completed actual date"),
         ],
     )
     @pytest.mark.parametrize(
@@ -398,7 +410,6 @@ def test_date_with_initial_value_is_required(
             ("construction_started_planned", "Construction started planned date must be a real date"),
             ("construction_started_actual", "Construction started actual date must be a real date"),
             ("construction_completed_planned", "Construction completed planned date must be a real date"),
-            ("construction_completed_actual", "Construction completed actual date must be a real date"),
         ],
     )
     @pytest.mark.parametrize(