diff --git a/vizro-core/changelog.d/20231124_130803_antony.milne_session_storage.md b/vizro-core/changelog.d/20231124_130803_antony.milne_session_storage.md
new file mode 100644
index 000000000..9231939f6
--- /dev/null
+++ b/vizro-core/changelog.d/20231124_130803_antony.milne_session_storage.md
@@ -0,0 +1,47 @@
+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+<!--
+### Highlights ✨
+
+- A bullet item for the Highlights ✨ category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Removed
+
+- A bullet item for the Removed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Added
+
+- A bullet item for the Added category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+
+### Changed
+
+- Change the persistence of client-side data to `session` rather than `local` ([#182](https://github.com/mckinsey/vizro/pull/182))
+
+<!--
+### Deprecated
+
+- A bullet item for the Deprecated category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Fixed
+
+- A bullet item for the Fixed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Security
+
+- A bullet item for the Security category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
diff --git a/vizro-core/docs/pages/user_guides/custom_charts.md b/vizro-core/docs/pages/user_guides/custom_charts.md
index 3dda3f720..7325b16d2 100644
--- a/vizro-core/docs/pages/user_guides/custom_charts.md
+++ b/vizro-core/docs/pages/user_guides/custom_charts.md
@@ -151,10 +151,3 @@ The below examples shows a more involved use-case. We create and style a waterfa
         [![Graph3]][Graph3]
 
     [Graph3]: ../../assets/user_guides/custom_charts/custom_chart_waterfall.png
-
-
-???+ warning
-
-    Please note that users of this package are responsible for the content of any custom-created component,
-    function or integration they write - especially with regard to leaking any sensitive information or exposing to
-    any security threat during implementation.
diff --git a/vizro-core/docs/pages/user_guides/custom_components.md b/vizro-core/docs/pages/user_guides/custom_components.md
index f3872edfd..6caaef8bd 100644
--- a/vizro-core/docs/pages/user_guides/custom_components.md
+++ b/vizro-core/docs/pages/user_guides/custom_components.md
@@ -137,6 +137,7 @@ vm.Parameter.add_type("selector", TooltipNonCrossRangeSlider)
                                     className="range_slider_control" if self.step else "range_slider_control_no_space",
                                     value=value,
                                     persistence=True,
+                                    persistence_type="session",
                                     allowCross=False, # (3)!
                                     tooltip={"placement": "bottom", "always_visible": True}, # (4)!
                                 ),
@@ -154,6 +155,7 @@ vm.Parameter.add_type("selector", TooltipNonCrossRangeSlider)
                                             value=value[0],
                                             size="24px",
                                             persistence=True,
+                                            persistence_type="session",
                                         ),
                                         dcc.Input(
                                             id=f"{self.id}_end_value",
@@ -166,8 +168,9 @@ vm.Parameter.add_type("selector", TooltipNonCrossRangeSlider)
                                             else "slider_input_field_no_space_right",
                                             value=value[1],
                                             persistence=True,
+                                            persistence_type="session",
                                         ),
-                                        dcc.Store(id=f"temp-store-range_slider-{self.id}", storage_type="local"),
+                                        dcc.Store(id=f"temp-store-range_slider-{self.id}", storage_type="session"),
                                     ],
                                     className="slider_input_container",
                                 ),
@@ -355,3 +358,5 @@ vm.Page.add_type("components", Jumbotron)
     Please note that users of this package are responsible for the content of any custom-created component,
     function or integration they write - especially with regard to leaking any sensitive information or exposing to
     any security threat during implementation.
+
+    By default, all Dash components in Vizro that persist client-side data set [`persistence_type="session"` to use `window.SessionStorage`](https://dash.plotly.com/persistence), which is cleared upon closing the browser. Be careful when using any custom components that persist data beyond this scope: it is your responsibility to ensure compliance with any legal requirements affecting jurisdictions in which your app operates.
diff --git a/vizro-core/docs/pages/user_guides/integration.md b/vizro-core/docs/pages/user_guides/integration.md
index c4c6e1253..faa0f4961 100644
--- a/vizro-core/docs/pages/user_guides/integration.md
+++ b/vizro-core/docs/pages/user_guides/integration.md
@@ -70,10 +70,3 @@ The full code for these different cases is given below.
         for dataset_name, dataset in kedro_integration.datasets_from_catalog(catalog).items():
             data_manager[dataset_name] = dataset
         ```
-
-
-???+ warning
-
-    Please note that users of this package are responsible for the content of any custom-created component,
-    function or integration they write - especially with regard to leaking any sensitive information or exposing to
-    any security threat during implementation.
diff --git a/vizro-core/src/vizro/models/_components/form/_user_input.py b/vizro-core/src/vizro/models/_components/form/_user_input.py
index cfe29a275..53821ed98 100644
--- a/vizro-core/src/vizro/models/_components/form/_user_input.py
+++ b/vizro-core/src/vizro/models/_components/form/_user_input.py
@@ -42,6 +42,7 @@ def build(self):
                     placeholder=self.placeholder,
                     type=self.input_type,
                     persistence=True,
+                    persistence_type="session",
                     debounce=True,
                     className="user_input",
                 ),
diff --git a/vizro-core/src/vizro/models/_components/form/checklist.py b/vizro-core/src/vizro/models/_components/form/checklist.py
index b8f0daea6..83d07aa06 100644
--- a/vizro-core/src/vizro/models/_components/form/checklist.py
+++ b/vizro-core/src/vizro/models/_components/form/checklist.py
@@ -47,6 +47,7 @@ def build(self):
                     options=full_options,
                     value=self.value if self.value is not None else [default_value],
                     persistence=True,
+                    persistence_type="session",
                     className="selector_body_checklist",
                 ),
             ],
diff --git a/vizro-core/src/vizro/models/_components/form/dropdown.py b/vizro-core/src/vizro/models/_components/form/dropdown.py
index 9d01c79a5..cf5626954 100755
--- a/vizro-core/src/vizro/models/_components/form/dropdown.py
+++ b/vizro-core/src/vizro/models/_components/form/dropdown.py
@@ -60,6 +60,7 @@ def build(self):
                     value=self.value if self.value is not None else default_value,
                     multi=self.multi,
                     persistence=True,
+                    persistence_type="session",
                     className="selector_body_dropdown",
                 ),
             ],
diff --git a/vizro-core/src/vizro/models/_components/form/radio_items.py b/vizro-core/src/vizro/models/_components/form/radio_items.py
index 782f15d21..2d69efa6c 100644
--- a/vizro-core/src/vizro/models/_components/form/radio_items.py
+++ b/vizro-core/src/vizro/models/_components/form/radio_items.py
@@ -48,6 +48,7 @@ def build(self):
                     options=full_options,
                     value=self.value if self.value is not None else default_value,
                     persistence=True,
+                    persistence_type="session",
                     className="selector_body_radio_items",
                 ),
             ],
diff --git a/vizro-core/src/vizro/models/_components/form/range_slider.py b/vizro-core/src/vizro/models/_components/form/range_slider.py
index 4ee181c8d..9bd94e52b 100644
--- a/vizro-core/src/vizro/models/_components/form/range_slider.py
+++ b/vizro-core/src/vizro/models/_components/form/range_slider.py
@@ -98,6 +98,7 @@ def build(self):
                             marks=self.marks,
                             value=value,
                             persistence=True,
+                            persistence_type="session",
                             className="range_slider_control" if self.step else "range_slider_control_no_space",
                         ),
                         html.Div(
@@ -112,6 +113,7 @@ def build(self):
                                     value=value[0],
                                     size="24px",
                                     persistence=True,
+                                    persistence_type="session",
                                     className="slider_input_field_left"
                                     if self.step
                                     else "slider_input_field_no_space_left",
@@ -125,11 +127,12 @@ def build(self):
                                     step=self.step,
                                     value=value[1],
                                     persistence=True,
+                                    persistence_type="session",
                                     className="slider_input_field_right"
                                     if self.step
                                     else "slider_input_field_no_space_right",
                                 ),
-                                dcc.Store(id=f"temp-store-range_slider-{self.id}", storage_type="local"),
+                                dcc.Store(id=f"temp-store-range_slider-{self.id}", storage_type="session"),
                             ],
                             className="slider_input_container",
                         ),
diff --git a/vizro-core/src/vizro/models/_components/form/slider.py b/vizro-core/src/vizro/models/_components/form/slider.py
index 4a44e898f..28be60714 100644
--- a/vizro-core/src/vizro/models/_components/form/slider.py
+++ b/vizro-core/src/vizro/models/_components/form/slider.py
@@ -93,6 +93,7 @@ def build(self):
                             value=self.value or self.min,
                             included=False,
                             persistence=True,
+                            persistence_type="session",
                             className="slider_control" if self.step else "slider_control_no_space",
                         ),
                         dcc.Input(
@@ -104,9 +105,10 @@ def build(self):
                             step=self.step,
                             value=self.value or self.min,
                             persistence=True,
+                            persistence_type="session",
                             className="slider_input_field_right" if self.step else "slider_input_field_no_space_right",
                         ),
-                        dcc.Store(id=f"{self.id}_temp_store", storage_type="local"),
+                        dcc.Store(id=f"{self.id}_temp_store", storage_type="session"),
                     ],
                     className="slider_inner_container",
                 ),
diff --git a/vizro-core/src/vizro/models/_dashboard.py b/vizro-core/src/vizro/models/_dashboard.py
index f28b08f22..a1631288a 100644
--- a/vizro-core/src/vizro/models/_dashboard.py
+++ b/vizro-core/src/vizro/models/_dashboard.py
@@ -96,7 +96,9 @@ def _make_page_layout(self, page: Page):
             if self.title
             else html.Div(hidden=True, id="dashboard_title_outer")
         )
-        theme_switch = daq.BooleanSwitch(id="theme_selector", on=self.theme == "vizro_dark", persistence=True)
+        theme_switch = daq.BooleanSwitch(
+            id="theme_selector", on=self.theme == "vizro_dark", persistence=True, persistence_type="session"
+        )
 
         # Shared across pages but slightly differ in content
         page_title = html.H2(children=page.title, id="page_title")
diff --git a/vizro-core/tests/unit/vizro/models/_components/form/test_checklist.py b/vizro-core/tests/unit/vizro/models/_components/form/test_checklist.py
index c73dd0c06..be1275a13 100755
--- a/vizro-core/tests/unit/vizro/models/_components/form/test_checklist.py
+++ b/vizro-core/tests/unit/vizro/models/_components/form/test_checklist.py
@@ -21,6 +21,7 @@ def expected_checklist():
                 value=["ALL"],
                 className="selector_body_checklist",
                 persistence=True,
+                persistence_type="session",
             ),
         ],
         className="selector_container",
diff --git a/vizro-core/tests/unit/vizro/models/_components/form/test_dropdown.py b/vizro-core/tests/unit/vizro/models/_components/form/test_dropdown.py
index 64b94f0e2..76b496162 100755
--- a/vizro-core/tests/unit/vizro/models/_components/form/test_dropdown.py
+++ b/vizro-core/tests/unit/vizro/models/_components/form/test_dropdown.py
@@ -21,6 +21,7 @@ def expected_dropdown_with_all():
                 value="ALL",
                 multi=True,
                 persistence=True,
+                persistence_type="session",
                 className="selector_body_dropdown",
             ),
         ],
@@ -40,6 +41,7 @@ def expected_dropdown_without_all():
                 value="A",
                 multi=False,
                 persistence=True,
+                persistence_type="session",
                 className="selector_body_dropdown",
             ),
         ],
diff --git a/vizro-core/tests/unit/vizro/models/_components/form/test_radioitems.py b/vizro-core/tests/unit/vizro/models/_components/form/test_radioitems.py
index 83c2053bd..05f935895 100755
--- a/vizro-core/tests/unit/vizro/models/_components/form/test_radioitems.py
+++ b/vizro-core/tests/unit/vizro/models/_components/form/test_radioitems.py
@@ -21,6 +21,7 @@ def expected_radio_items():
                 value="A",
                 className="selector_body_radio_items",
                 persistence=True,
+                persistence_type="session",
             ),
         ],
         className="selector_container",
diff --git a/vizro-core/tests/unit/vizro/models/_components/form/test_range_slider.py b/vizro-core/tests/unit/vizro/models/_components/form/test_range_slider.py
index dba28f7b6..5e74b86df 100644
--- a/vizro-core/tests/unit/vizro/models/_components/form/test_range_slider.py
+++ b/vizro-core/tests/unit/vizro/models/_components/form/test_range_slider.py
@@ -28,6 +28,7 @@ def expected_range_slider_default():
                         id="range_slider",
                         className="range_slider_control_no_space",
                         persistence=True,
+                        persistence_type="session",
                         min=None,
                         max=None,
                         marks=None,
@@ -44,6 +45,7 @@ def expected_range_slider_default():
                                 size="24px",
                                 step=None,
                                 persistence=True,
+                                persistence_type="session",
                                 min=None,
                                 max=None,
                                 value=None,
@@ -54,12 +56,13 @@ def expected_range_slider_default():
                                 placeholder="end",
                                 className="slider_input_field_no_space_right",
                                 persistence=True,
+                                persistence_type="session",
                                 step=None,
                                 min=None,
                                 max=None,
                                 value=None,
                             ),
-                            dcc.Store(id="temp-store-range_slider-range_slider", storage_type="local"),
+                            dcc.Store(id="temp-store-range_slider-range_slider", storage_type="session"),
                         ],
                         className="slider_input_container",
                     ),
@@ -96,6 +99,7 @@ def expected_range_slider_with_optional():
                         className="range_slider_control",
                         value=[0, 10],
                         persistence=True,
+                        persistence_type="session",
                     ),
                     html.Div(
                         [
@@ -110,6 +114,7 @@ def expected_range_slider_with_optional():
                                 value=0,
                                 size="24px",
                                 persistence=True,
+                                persistence_type="session",
                             ),
                             dcc.Input(
                                 id="range_slider_with_all_end_value",
@@ -121,8 +126,9 @@ def expected_range_slider_with_optional():
                                 className="slider_input_field_right",
                                 value=10,
                                 persistence=True,
+                                persistence_type="session",
                             ),
-                            dcc.Store(id="temp-store-range_slider-range_slider_with_all", storage_type="local"),
+                            dcc.Store(id="temp-store-range_slider-range_slider_with_all", storage_type="session"),
                         ],
                         className="slider_input_container",
                     ),
diff --git a/vizro-core/tests/unit/vizro/models/_components/form/test_slider.py b/vizro-core/tests/unit/vizro/models/_components/form/test_slider.py
index a8cd4a6ab..6a2747010 100755
--- a/vizro-core/tests/unit/vizro/models/_components/form/test_slider.py
+++ b/vizro-core/tests/unit/vizro/models/_components/form/test_slider.py
@@ -33,6 +33,7 @@ def expected_slider():
                         value=5,
                         included=False,
                         persistence=True,
+                        persistence_type="session",
                         className="slider_control",
                     ),
                     dcc.Input(
@@ -44,9 +45,10 @@ def expected_slider():
                         max=10,
                         value=5,
                         persistence=True,
+                        persistence_type="session",
                         className="slider_input_field_right",
                     ),
-                    dcc.Store(id="slider_id_temp_store", storage_type="local"),
+                    dcc.Store(id="slider_id_temp_store", storage_type="session"),
                 ],
                 className="slider_inner_container",
             ),