Introduction to Cookies

Cookies are small files stored in your browser and are used by most websites to help personalise your web experience. Some features on this site may not function if you do not allow cookies.

For additional information on cookies please check out the Information Commissioner's Office.

If you accept cookies the following cookies may be set on your device
Compliance Cookies

This is a small cookie used to store your cookie preferences.

Analytics Cookies

We use the Google Analytics service on this website. The information generated by the cookie about your use of our 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 our website, compiling reports on website activity 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 undertakes not to associate your IP address with any other data held by Google.

To opt out of being tracked by Google Analytics across all websites visit http://tools.google.com/dlpage/gaoptout .

Third Party Cookies

We use a number of tools and external applications, in particular Google Analytics, Google Maps and Google Custom Search, to enhance visitor interaction on our site. These services will set a cookie called 'PREF' which Google uses to track user preferences from one site to another.

The Google Maps on our site also set cookies known as NID, and SNID. These cookies allow Google Maps to remember which browser you are using and what preferences you have set when you view maps

YouTube cookies

We embed videos from our official YouTube channel using YouTube's privacy-enhanced mode. This mode may set cookies on your computer once you click on the YouTube video player, but YouTube will not store personally-identifiable cookie information for playbacks of embedded videos using the privacy-enhanced mode. To find out more please visit YouTube's embedding videos information page.

Functional Cookies

These cookies are used on some sites when completing online forms, logging in to the site or using other functions. They do not contain any personal information and for the most part are automatically deleted when you close your browser.

If you want to delete any cookies that are already on your computer, please refer to the instructions for your file management software to locate the file or directory that stores cookies. You can access them through some types of browser.

More information about cookies, including how to block them or delete them, can be found at AboutCookies.org.

Details of cookies used by this website

This list shows all cookies used by this website, and what each is used for.

Cookie Name Purpose Expiry
__utmb Google Analytics cookie. This stores the domain name (hash code) of site, pages viewed this session, current time. 30 minutes
__utmc Google Analytics cookie. This stores the domain name (hash code) of site. At end of session
__utma Google Analytics cookie. This stores the domain name (hash code) of site, a unique visitor id (randomly generated number), time of first visit, time of previous visit, current time, number of sessions since first visit. 2 years
__utmz Google Analytics cookie. This stores the domain name (hash code) of site, time when cookie last set, total number of visitor sessions, number of different channels or sources through which this site was reached, source of the last cookie update, search hit tag identifier (or just 'organic' if reached via normal search hit), search medium, keyword phrase used to find site. 6 months
PREF Saves the user's Google identifier, time of first receiving this cookie, last time when preferences were set, checksum for data integrity. This third-party cookie is placed by Google to track a user's preferences from one Google site to another. 2 years