How are cookies used on

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 better. They may also provide information to the owners of the site. The table below explains the cookies we use and why.


Description of cookies used on this site




Content management system


This cookie is essential and is used by the content management system (CMS) to protect the site from cross-site request forgery, also known as one-click attack or session riding. Expires at the end of the session.

Cookie preference


This cookie is used to remember a user's choice about cookies on this site. Where users have already made a choice, it will be stored in this cookie. This cookie expires after a year.

Universal Analytics (Google)


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 a way that does not directly identify anyone. Information collected includes the number of visitors to the website, where visitors have come to the website from and the pages they visited.
Read Google's overview of privacy and safeguarding data.

_ga expires after two years.
_gat expires after ten minutes.
_gid expires after 24 hours.

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. YouTube will not store personally-identifiable cookie information if you play our embedded videos.
Read more at YouTube's embedding videos information page.

PREF expires after eight months.
VSC expires at the end of your session.
VISITOR_INFO1_LIVE expires after eight months.
remote_sid expires at the end of your session.

We also provide links to videos and video playlists, these links will take you to YouTube's own website. We have no control over the cookies that YouTube uses there.

Vimeo cookies


We embed videos from our official Vimeo channel. If you visit a page with a Vimeo video on it, Vimeo will drop a cookie ('player') to enable the video to play. If you press play Vimeo will drop another cookie ('vuid') to collect analytics data such as how long a viewer has watched the video. These cookies do not track individuals.

At the time of writing Vimeo was not setting these cookies.

SoundCloud cookies


We embed audio streaming from our official SoundCloud channel. If you visit a page with a SoundCloud player, SoundCloud will drop a cookie to enable the audio to play. This is not a tracking cookie.

How do I change my cookie settings?

You can change your cookie preferences at any time by clicking on the 'C' Cookie Control icon at the bottom of any web page. You can then adjust the sliders to 'On' or 'Off'. Then clicking 'Save and close'. You may need to refresh your page for your settings to start working.

Pressing the 'Accept Recommended Cookies' will allow us to set Google Analytics cookies. We recommend these cookies so that we can improve the service our site provides.

Alternatively, 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 the About Cookies website or All About Cookies website.

Find out how to manage cookies on popular browsers:

To find out about other browsers, visit the browser developers' website.

To opt out of being tracked by Google Analytics across all websites, visit Google's webpage on this.