diff --git a/components/header.js b/components/header.js
index fa6b92d2..f4fcf1d9 100644
--- a/components/header.js
+++ b/components/header.js
@@ -65,6 +65,9 @@ const Header = (props) => {
                 <div className="govuk-header__content govuk-!-width-one-half govuk-!-margin-top-3">
                     <Link href="/logout">
                         <a
+                            onClick={() => {
+                                window.localStorage.clear();
+                            }}
                             className="govuk-header__link
                         govuk-header__link--service-name"
                         >
@@ -102,7 +105,12 @@ const Header = (props) => {
                                     ) : (
                                         <li>
                                             <Link href="/logout">
-                                                <a className="govuk-header__link ">
+                                                <a
+                                                    onClick={() => {
+                                                        window.localStorage.clear();
+                                                    }}
+                                                    className="govuk-header__link "
+                                                >
                                                     {t("common:signout-label")}
                                                 </a>
                                             </Link>
@@ -152,7 +160,12 @@ const Header = (props) => {
                         {router.pathname != "/" ||
                         router.pathname != "/logout" ? (
                             <Link href="/logout">
-                                <a className="govuk-header__link govuk-!-margin-right-3">
+                                <a
+                                    onClick={() => {
+                                        window.localStorage.clear();
+                                    }}
+                                    className="govuk-header__link govuk-!-margin-right-3"
+                                >
                                     {t("common:signout-label")}
                                 </a>
                             </Link>