diff --git a/README.md b/README.md
index 3cd89b6..055b69f 100644
--- a/README.md
+++ b/README.md
@@ -21,10 +21,15 @@ In the European Union, this extension's fields correspond to [eForms BT-01 (Proc
 ```json
 {
   "tender": {
-    "crossBorderLaw": "Italian procurement legislation",
+    "crossBorderLaw": "UK procurement legislation",
     "legalBasis": {
-      "id": "32014L0025",
-      "scheme": "CELEX"
+      "id": "https://www.legislation.gov.uk/id/uksi/2015/102",
+      "scheme": "ELI",
+      "wasDerivedFrom": {
+        "id": "32014L0024",
+        "scheme": "CELEX",
+        "uri": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32011R1007"
+      }
     }
   }
 }
diff --git a/release-schema.json b/release-schema.json
index 4fcd619..c20d2a7 100644
--- a/release-schema.json
+++ b/release-schema.json
@@ -14,7 +14,45 @@
         "legalBasis": {
           "title": "Legal basis",
           "description": "The legal basis of the procedure.",
-          "$ref": "#/definitions/Classification"
+          "type": "object",
+          "properties": {
+            "scheme": {
+              "title": "Scheme",
+              "description": "The scheme or codelist from which the legislation code is taken.",
+              "type": [
+                "string",
+                "null"
+              ],
+              "codelist": "+itemClassificationScheme.csv",
+              "openCodelist": true,
+              "minLength": 1
+            },
+            "id": {
+              "title": "ID",
+              "description": "The legislation code taken from the scheme.",
+              "type": [
+                "string",
+                "integer",
+                "null"
+              ],
+              "minLength": 1
+            },
+            "uri": {
+              "title": "URI",
+              "description": "A URI to uniquely identify the legislation.",
+              "type": [
+                "string",
+                "null"
+              ],
+              "format": "uri"
+            },
+            "wasDerivedFrom": {
+              "title": "Was derived from",
+              "description": "The directive the legislation was derived from.",
+              "$ref": "#/definitions/Classification"
+            }
+          },
+          "minProperties": 1
         }
       }
     }