MediaWiki/languages/messages/MessagesEn_gb.php

<?php
/** British English (British English)
 *
 * To improve a translation please visit https://translatewiki.net
 *
 * @ingroup Language
 * @file
 *
 */

$specialPageAliases = [
	'Uncategorizedcategories'   => [ 'UncategorisedCategories' ],
	'Uncategorizedimages'       => [ 'UncategorisedFiles', 'UncategorisedImages' ],
	'Uncategorizedpages'        => [ 'UncategorisedPages' ],
	'Uncategorizedtemplates'    => [ 'UncategorisedTemplates' ],
];