Use of cookies

Cookies are small text files which are downloaded to your computer or mobile device when you visit a website or application. Your web browser (such as Internet Explorer, Mozilla Firefox or Google Chrome) sends these cookies back to the website or application on each subsequent visit. This allows them to recognise you and remember things like user preferences.

By using our website, you are consenting to our use of cookies. You may opt out of the use of cookies by following the guidance provided in the Manage Your Cookies section below.

Types of cookies we use and why
Cookie NameExpiration TimePurposeMore Information
_ga 2 years Used to distinguish users
_gid 24 hours Used to distinguish users
_gat 10 minutes Used to throttle request rate
CookieMessageAcknowledged 1 year Used to indicate a visitor has consented to the use of cookies


OldBrowserWarningAcknowledged 30 days Used to indicate a visitor has acknowledged the use of an old browser


QSI_HistorySession Same day Local cookie to capture survey response
ASP.NET_SessionId On close of browser Used to remember information entered in a form

Managing cookies in your browser

It is possible to disable the use of cookies in your browser.

However, this can affect your browsing experience and some services on this site and others may not function properly, or at all. The procedure for disabling cookies depends on your browser.

The following links are to several of the more popular browsers for procedures on how to view and disable cookies:

Next: Usage of Google Analytics