Cookies are small text files that are placed on your computer by websites that you visit. They are widely used in order to make websites work, or work more efficiently, as well as to provide information to the owners of the site. The table below explains the cookies we use and why.

Cookie Name Purpose
Universal Analytics (Google) _gat, _ga, _gid

These cookies are used to collect information about how visitors use our website. We use the information to compile reports and to help us improve the website. The cookies collect information in an anonymous form, including the number of visitors to the website, where visitors have come to the website from and the pages they have visited.

You can read Google’s overview of privacy and safeguarding data at:

Load balancing cookie DYNSRV

This is a load balancing cookie which we use to ensure the content of your page loads quickly and effectively by distributing the workload across several computers.


Some of our pages use an embedded Twitter feed. Twitter may set a number of cookies to store your login state, preferences or other information. For more information on what cookies Twitter uses, please refer to Twitter’s Cookie Policy at

How do I change my Cookie settings?

Most web browsers allow some control of most cookies through the browser settings. To find out more about cookies, including how to see what cookies have been set, visit or

Find out how to manage cookies on popular browsers:

To find information relating to other browsers, visit the browser developer’s website.

To opt out of being tracked by Google Analytics across all websites, visit

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