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This website uses “cookie” technology. Cookies are small data files placed on your computer, mobile or other device when you browse online.

Details of cookies used on our website are outlined in the tables below.

Managing Cookies

Accept Cookies:

You can accept cookies by selecting the “Accept all cookies” option or clicking on the checkbox beside the category of cookies you want to accept and selecting “Save Preferences” on the Privacy Settings tab at the bottom of any webpage.

Reject Cookies:

You can reject cookies by leaving the check boxes beside the categories of cookies you want to reject blank and selecting the “Save Preferences” option on the Privacy Settings tab at the bottom of any webpage. No Analytics or Advertising cookies are set if you do not make any choice.

Withdraw Consent:

You can withdraw consent at any time to cookies previously accepted, by selecting the “Withdraw consent” option on the Privacy Settings tab at the bottom of any webpage.

Strictly Necessary Cookies

These cookies are necessary for the proper operation of the website.

Name Description Expiry
SSESS[id-hash] Allows the system to identify authenticated users, e.g. editors. 2 weeks
has_js Allows the system to know if a client browser supports Javascript Session only

User Preference Cookies

These cookies record your preference to either accept or reject cookies and the category or categories of cookie(s) selected.

Name Description Expiry
cookie-agreed Cookie management - Overall opt-in 100 days
cookie-agreed-categories Cookie management - Categorised opt-ins 100 days

Analytics Cookies

These Google Analytics cookies allow us to collect anonymised data to help us deliver a better service to you.

Name Description Expiry
_gid Used to distinguish users 1 day
_ga Used to distinguish users 2 years

Advertising Cookies

These YouTube cookies are necessary to view videos on our website. 

Name Description Expiry
PREF This cookie, which may be set by Google or Doubleclick, may be used by advertising partners to build a profile of interests to show relevant ads on other sites. 2 Years
YSC This cookie is set by YouTube to track views of embedded videos. Session only
VISITOR_INFO1_LIVE This cookie is set by YouTube to keep track of user preferences for YouTube videos embedded in sites. It can also determine whether the website visitor is using the new or old version of the YouTube interface. 6 months
DSID Advertising ( - This cookie is set to note your specific user identity 1 day
IDE Advertising ( - Doubleclick is Google’s real time bidding advertising exchange. 9 months

Google Analytics / YouTube

This website uses Google Analytics, a web analytics service provided by Google, Inc. ("Google"). Google Analytics uses "cookies", which are text files placed on your computer, to help the website analyze how users use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States. Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf.

Google will not associate your IP address with any other data held by Google. You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do this you may not be able to use the full functionality of this website. 

Privacy Statement