hmm – that didn;t seem to block people – I’m testing this at the moment
add_action( 'admin_init', 'redirect_admin' );
function redirect_admin() {
if ( is_admin() && ! current_user_can( 'administrator' ) && ! (defined( 'DOING_AJAX' ) && DOING_AJAX ) ){
wp_redirect( "http://www.cultshare.co.uk/404.php");
exit;
}
}