Our website uses cookies to distinguish you from other users of our website. This helps us to provide you with a good experience when you browse our website and also allows us to improve our site.
A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer if you agree. Cookies contain information that is transferred to your computer’s hard drive.
The cookies we use are “analytical” cookies. They allow us to recognise and count the number of visitors and to see how visitors move around the site when they are using it. This helps us to improve the way our website works, for example, by ensuring that users are finding what they are looking for easily. You can find more information about the individual cookies we use and the purposes for which we use them in the table below:
| Cookie | Name | Purpose | More information |
| Google Analytics | __utma | Used to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics. | https://www.google.com/analytics/learn/privacy.html |
| Google Analytics | __utmb | Used to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics. | https://www.google.com/analytics/learn/privacy.html |
| Google Analytics | __utmc | Not used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the__utmb cookie to determine whether the user was in a new session/visit. | https://www.google.com/analytics/learn/privacy.html |
| Google Analytics | __utmz | Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics. | https://www.google.com/analytics/learn/privacy.html |
| Google Analytics | __utmv |
Used to store visitor-level custom variable data. This cookie is created when a developer uses the_setCustomVar method with a visitor level custom variable. This cookie was also used for the deprecated_setVar method. The cookie is updated every time data is sent to Google Analytics. |
https://www.google.com/analytics/learn/privacy.html |
You block cookies by activating the setting on your browser that allows you to refuse the setting of all or some cookies. However, if you use your browser settings to block all cookies (including essential cookies) you may not be able to access all or parts of our site.
Except for essential cookies, all cookies will expire after 2 years.