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. By continuing to browse the site, you are agreeing to our use of cookies. 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. We use analytics cookies to collect information on how visitors interact with our website and to enable us to maintain and develop it. The data gathered, which includes details of the number of visitors to the site and the pages they access, is in anonymous form. It does not identify individual users. Below is a list of the cookies we have set and the reasons for doing so: Cookie Name Description _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. _utmt: Used to throttle request rate _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 _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. _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 _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 You may control the cookies used by our website by modifying the settings in your browser – view the help menu to change your cookie preferences. If cookies are disabled, this may mean that you are not able to take full advantage of all the features on our site. For more detailed information about cookies and how they can be managed and deleted, please visit  http://www.allaboutcookies.org/. To access the Google Analytics opt out browser, please visit Google Tools. By choosing this option, you will block Google Analytics across all websites. Please note that third parties (including, for example, advertising networks and providers of external services like web traffic analysis services) may also use cookies, over which we have no control. These cookies are likely to be analytical/performance cookies or targeting cookies. Thank you for visiting our site.