diff --git a/schemas/prototypeApplication.json b/schemas/prototypeApplication.json
index 7d962eec..0e43cd0c 100644
--- a/schemas/prototypeApplication.json
+++ b/schemas/prototypeApplication.json
@@ -139,6 +139,7 @@
           "description": "Contact information for the site visit"
         },
         "type": {
+          "description": "The type of applicant",
           "enum": [
             "individual",
             "company",
@@ -518,6 +519,7 @@
           "description": "Contact information for the site visit"
         },
         "type": {
+          "description": "The type of applicant",
           "enum": [
             "individual",
             "company",
@@ -538,6 +540,150 @@
       ],
       "type": "object"
     },
+    "BasePlanningDesignation": {
+      "anyOf": [
+        {
+          "const": "article4",
+          "description": "Article 4 Direction area",
+          "type": "string"
+        },
+        {
+          "const": "article4.caz",
+          "description": "Central Activities Zone (CAZ)",
+          "type": "string"
+        },
+        {
+          "const": "brownfieldSite",
+          "description": "Brownfield site",
+          "type": "string"
+        },
+        {
+          "const": "designated",
+          "description": "Designated land",
+          "type": "string"
+        },
+        {
+          "const": "designated.AONB",
+          "description": "Area of Outstanding Natural Beauty (AONB)",
+          "type": "string"
+        },
+        {
+          "const": "designated.conservationArea",
+          "description": "Conservation Area",
+          "type": "string"
+        },
+        {
+          "const": "designated.nationalPark",
+          "description": "National Park",
+          "type": "string"
+        },
+        {
+          "const": "designated.nationalPark.broads",
+          "description": "National Park - Broads",
+          "type": "string"
+        },
+        {
+          "const": "designated.WHS",
+          "description": "UNESCO World Heritage Site or buffer zone",
+          "type": "string"
+        },
+        {
+          "const": "flood",
+          "description": "Flood Risk Zone",
+          "type": "string"
+        },
+        {
+          "const": "flood.zone.1",
+          "description": "Flood Risk Zone 1 - Low risk",
+          "type": "string"
+        },
+        {
+          "const": "flood.zone.2",
+          "description": "Flood Risk Zone 2 - Medium risk",
+          "type": "string"
+        },
+        {
+          "const": "flood.zone.3",
+          "description": "Flood Risk Zone 3 - High risk",
+          "type": "string"
+        },
+        {
+          "const": "greenBelt",
+          "description": "Green Belt",
+          "type": "string"
+        },
+        {
+          "const": "listed",
+          "description": "Listed Building",
+          "type": "string"
+        },
+        {
+          "const": "listed.grade.I",
+          "description": "Listed Building - Grade I",
+          "type": "string"
+        },
+        {
+          "const": "listed.grade.II",
+          "description": "Listed Building - Grade II",
+          "type": "string"
+        },
+        {
+          "const": "listed.grade.II*",
+          "description": "Listed Building - Grade II*",
+          "type": "string"
+        },
+        {
+          "const": "locallyListed",
+          "description": "Locally Listed Building",
+          "type": "string"
+        },
+        {
+          "const": "monument",
+          "description": "Site of a Scheduled Monument",
+          "type": "string"
+        },
+        {
+          "const": "nature.ASNW",
+          "description": "Ancient Semi-Natural Woodland (ASNW)",
+          "type": "string"
+        },
+        {
+          "const": "nature.ramsarSite",
+          "description": "Ramsar site",
+          "type": "string"
+        },
+        {
+          "const": "nature.SAC",
+          "description": "Special Area of Conservation (SAC)",
+          "type": "string"
+        },
+        {
+          "const": "nature.SPA",
+          "description": "Special Protection Area (SPA)",
+          "type": "string"
+        },
+        {
+          "const": "nature.SSSI",
+          "description": "Site of Special Scientific Interest (SSSI)",
+          "type": "string"
+        },
+        {
+          "const": "registeredPark",
+          "description": "Historic Park or Garden",
+          "type": "string"
+        },
+        {
+          "const": "road.classified",
+          "description": "Classified Road",
+          "type": "string"
+        },
+        {
+          "const": "tpo",
+          "description": "Tree Preservation Order (TPO) or zone",
+          "type": "string"
+        }
+      ]
+    },
     "BuildingRegulation": {
       "$id": "#BuildingRegulation",
       "anyOf": [
@@ -1532,7 +1678,7 @@
                   "type": "object"
                 }
               ],
-              "description": "Information about the propery owners, if different than the applicant"
+              "description": "Information about the property owners, if different than the applicant"
             },
             "phone": {
               "additionalProperties": false,
@@ -1551,6 +1697,7 @@
               "description": "Contact information for the site visit"
             },
             "type": {
+              "description": "The type of applicant",
               "enum": [
                 "individual",
                 "company",
@@ -1717,7 +1864,7 @@
                   "type": "object"
                 }
               ],
-              "description": "Information about the propery owners, if different than the applicant"
+              "description": "Information about the property owners, if different than the applicant"
             },
             "phone": {
               "additionalProperties": false,
@@ -1736,6 +1883,7 @@
               "description": "Contact information for the site visit"
             },
             "type": {
+              "description": "The type of applicant",
               "enum": [
                 "individual",
                 "company",
@@ -2296,7 +2444,7 @@
         },
         "cost": {
           "additionalProperties": false,
-          "description": "Project cost",
+          "description": "Project cost in GBP",
           "properties": {
             "projected": {
               "enum": [
@@ -2428,7 +2576,8 @@
                 ],
                 "type": "string"
               },
-              "type": "array"
+              "type": "array",
+              "uniqueItems": true
             }
           },
           "required": [
@@ -4231,7 +4380,7 @@
             },
             "ownership": {
               "additionalProperties": false,
-              "description": "Information about the ownership certificate and propery owners, if different than the applicant",
+              "description": "Information about the ownership certificate and property owners, if different than the applicant",
               "properties": {
                 "agriculturalTenants": {
                   "description": "Does the land have any agricultural tenants?",
@@ -4338,6 +4487,7 @@
               "description": "Contact information for the site visit"
             },
             "type": {
+              "description": "The type of applicant",
               "enum": [
                 "individual",
                 "company",
@@ -4471,7 +4621,7 @@
             },
             "ownership": {
               "additionalProperties": false,
-              "description": "Information about the ownership certificate and propery owners, if different than the applicant",
+              "description": "Information about the ownership certificate and property owners, if different than the applicant",
               "properties": {
                 "agriculturalTenants": {
                   "description": "Does the land have any agricultural tenants?",
@@ -4578,6 +4728,7 @@
               "description": "Contact information for the site visit"
             },
             "type": {
+              "description": "The type of applicant",
               "enum": [
                 "individual",
                 "company",
@@ -4889,148 +5040,7 @@
               "type": "boolean"
             },
             "value": {
-              "anyOf": [
-                {
-                  "const": "article4",
-                  "description": "Article 4 Direction area",
-                  "type": "string"
-                },
-                {
-                  "const": "article4.caz",
-                  "description": "Central Activities Zone (CAZ)",
-                  "type": "string"
-                },
-                {
-                  "const": "brownfieldSite",
-                  "description": "Brownfield site",
-                  "type": "string"
-                },
-                {
-                  "const": "designated",
-                  "description": "Designated land",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.AONB",
-                  "description": "Area of Outstanding Natural Beauty (AONB)",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.conservationArea",
-                  "description": "Conservation Area",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.nationalPark",
-                  "description": "National Park",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.nationalPark.broads",
-                  "description": "National Park - Broads",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.WHS",
-                  "description": "UNESCO World Heritage Site or buffer zone",
-                  "type": "string"
-                },
-                {
-                  "const": "flood",
-                  "description": "Flood Risk Zone",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.1",
-                  "description": "Flood Risk Zone 1 - Low risk",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.2",
-                  "description": "Flood Risk Zone 2 - Medium risk",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.3",
-                  "description": "Flood Risk Zone 3 - High risk",
-                  "type": "string"
-                },
-                {
-                  "const": "greenBelt",
-                  "description": "Green Belt",
-                  "type": "string"
-                },
-                {
-                  "const": "listed",
-                  "description": "Listed Building",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.I",
-                  "description": "Listed Building - Grade I",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.II",
-                  "description": "Listed Building - Grade II",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.II*",
-                  "description": "Listed Building - Grade II*",
-                  "type": "string"
-                },
-                {
-                  "const": "locallyListed",
-                  "description": "Locally Listed Building",
-                  "type": "string"
-                },
-                {
-                  "const": "monument",
-                  "description": "Site of a Scheduled Monument",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.ASNW",
-                  "description": "Ancient Semi-Natural Woodland (ASNW)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.ramsarSite",
-                  "description": "Ramsar site",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SAC",
-                  "description": "Special Area of Conservation (SAC)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SPA",
-                  "description": "Special Protection Area (SPA)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SSSI",
-                  "description": "Site of Special Scientific Interest (SSSI)",
-                  "type": "string"
-                },
-                {
-                  "const": "registeredPark",
-                  "description": "Historic Park or Garden",
-                  "type": "string"
-                },
-                {
-                  "const": "road.classified",
-                  "description": "Classified Road",
-                  "type": "string"
-                },
-                {
-                  "const": "tpo",
-                  "description": "Tree Preservation Order (TPO) or zone",
-                  "type": "string"
-                }
-              ]
+              "$ref": "#/definitions/BasePlanningDesignation"
             }
           },
           "required": [
@@ -5054,148 +5064,7 @@
               "type": "boolean"
             },
             "value": {
-              "anyOf": [
-                {
-                  "const": "article4",
-                  "description": "Article 4 Direction area",
-                  "type": "string"
-                },
-                {
-                  "const": "article4.caz",
-                  "description": "Central Activities Zone (CAZ)",
-                  "type": "string"
-                },
-                {
-                  "const": "brownfieldSite",
-                  "description": "Brownfield site",
-                  "type": "string"
-                },
-                {
-                  "const": "designated",
-                  "description": "Designated land",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.AONB",
-                  "description": "Area of Outstanding Natural Beauty (AONB)",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.conservationArea",
-                  "description": "Conservation Area",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.nationalPark",
-                  "description": "National Park",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.nationalPark.broads",
-                  "description": "National Park - Broads",
-                  "type": "string"
-                },
-                {
-                  "const": "designated.WHS",
-                  "description": "UNESCO World Heritage Site or buffer zone",
-                  "type": "string"
-                },
-                {
-                  "const": "flood",
-                  "description": "Flood Risk Zone",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.1",
-                  "description": "Flood Risk Zone 1 - Low risk",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.2",
-                  "description": "Flood Risk Zone 2 - Medium risk",
-                  "type": "string"
-                },
-                {
-                  "const": "flood.zone.3",
-                  "description": "Flood Risk Zone 3 - High risk",
-                  "type": "string"
-                },
-                {
-                  "const": "greenBelt",
-                  "description": "Green Belt",
-                  "type": "string"
-                },
-                {
-                  "const": "listed",
-                  "description": "Listed Building",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.I",
-                  "description": "Listed Building - Grade I",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.II",
-                  "description": "Listed Building - Grade II",
-                  "type": "string"
-                },
-                {
-                  "const": "listed.grade.II*",
-                  "description": "Listed Building - Grade II*",
-                  "type": "string"
-                },
-                {
-                  "const": "locallyListed",
-                  "description": "Locally Listed Building",
-                  "type": "string"
-                },
-                {
-                  "const": "monument",
-                  "description": "Site of a Scheduled Monument",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.ASNW",
-                  "description": "Ancient Semi-Natural Woodland (ASNW)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.ramsarSite",
-                  "description": "Ramsar site",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SAC",
-                  "description": "Special Area of Conservation (SAC)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SPA",
-                  "description": "Special Protection Area (SPA)",
-                  "type": "string"
-                },
-                {
-                  "const": "nature.SSSI",
-                  "description": "Site of Special Scientific Interest (SSSI)",
-                  "type": "string"
-                },
-                {
-                  "const": "registeredPark",
-                  "description": "Historic Park or Garden",
-                  "type": "string"
-                },
-                {
-                  "const": "road.classified",
-                  "description": "Classified Road",
-                  "type": "string"
-                },
-                {
-                  "const": "tpo",
-                  "description": "Tree Preservation Order (TPO) or zone",
-                  "type": "string"
-                }
-              ]
+              "$ref": "#/definitions/BasePlanningDesignation"
             }
           },
           "required": [
@@ -9782,6 +9651,9 @@
             "flowId": {
               "$ref": "#/definitions/UUID"
             },
+            "overrides": {
+              "$ref": "#/definitions/UserOverrides"
+            },
             "url": {
               "$ref": "#/definitions/URL"
             }
@@ -10640,6 +10512,127 @@
       ],
       "type": "object"
     },
+    "UserOverrides": {
+      "additionalProperties": false,
+      "description": "Administrative data suggested by PlanX which the user overrode or changed",
+      "properties": {
+        "property": {
+          "additionalProperties": false,
+          "properties": {
+            "planning": {
+              "additionalProperties": false,
+              "properties": {
+                "designations": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "entities": {
+                        "items": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "description": {
+                              "type": "string"
+                            },
+                            "name": {
+                              "type": "string"
+                            },
+                            "source": {
+                              "anyOf": [
+                                {
+                                  "additionalProperties": false,
+                                  "properties": {
+                                    "text": {
+                                      "const": "Planning Data",
+                                      "type": "string"
+                                    },
+                                    "url": {
+                                      "$ref": "#/definitions/URL"
+                                    }
+                                  },
+                                  "required": [
+                                    "text",
+                                    "url"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": false,
+                                  "properties": {
+                                    "text": {
+                                      "const": "Ordnance Survey MasterMap Highways",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "text"
+                                  ],
+                                  "type": "object"
+                                }
+                              ]
+                            },
+                            "userReason": {
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "name",
+                            "source",
+                            "userReason"
+                          ],
+                          "type": "object"
+                        },
+                        "type": "array"
+                      },
+                      "sourceIntersects": {
+                        "const": true,
+                        "type": "boolean"
+                      },
+                      "userIntersects": {
+                        "const": false,
+                        "type": "boolean"
+                      },
+                      "value": {
+                        "$ref": "#/definitions/BasePlanningDesignation"
+                      }
+                    },
+                    "required": [
+                      "value",
+                      "sourceIntersects",
+                      "userIntersects",
+                      "entities"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                }
+              },
+              "required": [
+                "designations"
+              ],
+              "type": "object"
+            },
+            "type": {
+              "additionalProperties": false,
+              "properties": {
+                "sourceType": {
+                  "type": "string"
+                },
+                "userType": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "sourceType",
+                "userType"
+              ],
+              "type": "object"
+            }
+          },
+          "type": "object"
+        }
+      },
+      "type": "object"
+    },
     "UserRoles": {
       "enum": [
         "applicant",
diff --git a/types/schemas/prototypeApplication/Metadata.ts b/types/schemas/prototypeApplication/Metadata.ts
new file mode 100644
index 00000000..4e84a832
--- /dev/null
+++ b/types/schemas/prototypeApplication/Metadata.ts
@@ -0,0 +1,49 @@
+import {
+  BaseMetadata,
+  FeeExplanation,
+  FeeExplanationNotApplicable,
+} from '../../shared/Metadata';
+import {URL, UUID} from '../../shared/utils';
+import {Entity} from './data/shared';
+import {PrototypeFileType} from './enums/FileType';
+import {BasePlanningDesignation} from './enums/PlanningDesignation';
+
+/**
+ * @description File types requested by this service. Schema["files"] will be a subset of this list based on the user's journey through the service
+ */
+export interface PrototypeRequestedFiles {
+  required: PrototypeFileType[];
+  recommended: PrototypeFileType[];
+  optional: PrototypeFileType[];
+}
+
+/**
+ * @description Administrative data suggested by PlanX which the user overrode or changed
+ */
+export interface UserOverrides {
+  property?: {
+    type?: {
+      sourceType: string;
+      userType: string;
+    };
+    planning?: {
+      designations: {
+        value: BasePlanningDesignation;
+        sourceIntersects: true;
+        userIntersects: false;
+        entities: Array<Entity & {userReason: string}>;
+      }[];
+    };
+  };
+}
+
+export interface PrototypePlanXMetadata extends BaseMetadata {
+  source: 'PlanX';
+  service: {
+    flowId: UUID;
+    url: URL;
+    files: PrototypeRequestedFiles;
+    fee: FeeExplanation | FeeExplanationNotApplicable;
+    overrides?: UserOverrides;
+  };
+}
diff --git a/types/schemas/prototypeApplication/data/Proposal.ts b/types/schemas/prototypeApplication/data/Proposal.ts
index 56a0ce4a..f4936a91 100644
--- a/types/schemas/prototypeApplication/data/Proposal.ts
+++ b/types/schemas/prototypeApplication/data/Proposal.ts
@@ -215,9 +215,9 @@ export interface LondonProposal extends Omit<UKProposal, 'units'> {
    * @description Proposed energy sources
    */
   energy?: {
-  /**
-   * @uniqueItems true
-   */
+    /**
+     * @uniqueItems true
+     */
     type: Array<'communityOwned' | 'heatPump' | 'solar'>;
     communityOwned?: {
       /** @description Proposed total capacity of any on-site community-owned energy generation in megawatts (mW) */
diff --git a/types/schemas/prototypeApplication/enums/PlanningDesignation.ts b/types/schemas/prototypeApplication/enums/PlanningDesignation.ts
index 1f7e0355..08f4756e 100644
--- a/types/schemas/prototypeApplication/enums/PlanningDesignation.ts
+++ b/types/schemas/prototypeApplication/enums/PlanningDesignation.ts
@@ -139,7 +139,7 @@ type RoadClassified = 'road.classified';
  */
 type TPO = 'tpo';
 
-type BasePlanningDesignation =
+export type BasePlanningDesignation =
   | Article4
   | Article4CAZ
   | BrownfieldSite
diff --git a/types/schemas/prototypeApplication/index.ts b/types/schemas/prototypeApplication/index.ts
index 1b07928c..e4e020ca 100644
--- a/types/schemas/prototypeApplication/index.ts
+++ b/types/schemas/prototypeApplication/index.ts
@@ -1,10 +1,4 @@
-import {
-  BaseMetadata,
-  FeeExplanation,
-  FeeExplanationNotApplicable,
-} from '../../shared/Metadata';
 import {Responses} from '../../shared/Responses';
-import {UUID, URL} from '../../shared/utils';
 import {Applicant} from './data/Applicant';
 import {ApplicationData} from './data/ApplicationData';
 import {PropertyBase} from './data/Property';
@@ -19,29 +13,10 @@ import {
   PPApplicationType,
   PrimaryApplicationType,
 } from './enums/ApplicationType';
-import {PrototypeFileType} from './enums/FileType';
 import {File} from './File';
+import {PrototypePlanXMetadata} from './Metadata';
 import {PreAssessment} from './PreAssessment';
 
-/**
- * @description File types requested by this service. Schema["files"] will be a subset of this list based on the user's journey through the service
- */
-export interface PrototypeRequestedFiles {
-  required: PrototypeFileType[];
-  recommended: PrototypeFileType[];
-  optional: PrototypeFileType[];
-}
-
-export interface PrototypePlanXMetadata extends BaseMetadata {
-  source: 'PlanX';
-  service: {
-    flowId: UUID;
-    url: URL;
-    files: PrototypeRequestedFiles;
-    fee: FeeExplanation | FeeExplanationNotApplicable;
-  };
-}
-
 /**
  * @internal
  * The generic base type for all applications