diff --git a/falcon/_dev/js/theme/index.js b/falcon/_dev/js/theme/index.js
index fa9a71d..323fef8 100644
--- a/falcon/_dev/js/theme/index.js
+++ b/falcon/_dev/js/theme/index.js
@@ -79,4 +79,19 @@ $(() => {
     $(".js-select-link").on("change", ({ target }) => {
         window.location.href = $(target).val();
     });
+
+    // Postcode input formatting
+    const $postCodeInput = $("input[name='postcode']");
+    $postCodeInput.on("input", function () {
+        let value = $(this).val();
+
+        // Match 4 digits followed by 2 letters (e.g., 1234AB)
+        const match = value.match(/^(\d{4})([a-zA-Z]{2})$/);
+
+        if (match) {
+            // Add space between numbers and letters
+            const formatted = `${match[1]} ${match[2]}`;
+            $(this).val(formatted);
+        }
+    });
 });