diff --git a/src/app/api/postcode/LookupOsPlaces.ts b/src/app/api/postcode/LookupOsPlaces.ts
index 7a8d320..720e984 100644
--- a/src/app/api/postcode/LookupOsPlaces.ts
+++ b/src/app/api/postcode/LookupOsPlaces.ts
@@ -144,5 +144,16 @@ export async function lookupOsPlaces(
     }
   }
 
-  return { status: 200, data: first.data, results: allResults };
+  return {
+    status: 200,
+    data: {
+      ...first.data,
+      header: {
+        ...(first.data.header ?? {}),
+        totalresults: allResults.length,
+      },
+      results: allResults,
+    },
+    results: allResults,
+  };
 }