change your code:
<?php require_once('wa_evaluate.php'); ?>
<?php
include('/content/Hosting/q/u/qualityvillaholidays.co.uk/web/cms/WA_CMS/addtosite.php');
echo WA_getCMSContent ($database_PowerCMSConnection, $PowerCMSConnection, 'HolidayVillas', 'Villa', false);
?>
to;
<?php require_once('wa_evaluate.php'); ?>
<?php
include('/content/Hosting/q/u/qualityvillaholidays.co.uk/web/cms/WA_CMS/addtosite.php');
echo wa_evaluate(WA_getCMSContent ($database_PowerCMSConnection, $PowerCMSConnection, 'HolidayVillas', 'Villa', false));
?>