Privacy policy and cookies

Like many other websites, ours uses small text-only files called ‘cookies‘ in order to operate. These cookies are stored on your computer and accessed whenever you visit our site. They help us learn how often you visit, which pages you view, and so on. But don’t worry — nothing that personally identifies you or your precise location is stored by us. Everything is anonymous.

To comply with EU law, we have to inform you of our use of cookies.

Cookies set by this website

The following table details which cookies are set by this website, and their functions.

Cookie Type Duration Description
viewed_cookie_policy Persistent 1 year from set/update Used to remember whether the visitor has accepted our website cookie policy (that is, chosen to close the pop-up notification which appears at the top of our website). If set, it simply contains the word “yes”. It does not track any personal data.
__utma Persistent 2 years from set/update 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.
__utmb Persistent 30 mins from set/update 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.
__utmc Session End of browser session 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.
__utmz Persistent 6 months from set/update 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.