To make this site work properly, we sometimes place small data files called cookies on your device. Most websites do this too.

Cookies are small text files that a website saves on your computer or mobile device when you visit a site. It enables the website to remember your actions and preferences over a period of time, so you don't have to keep re-entering them whenever you come back to the site or browse from one page to another.

We use cookies to remember users' preferences and to identify users. You may turn them off and most parts of the website will continue to work normally. The cookies are both session and permanent types and are placed by third-party software and sites, which we use to improve the functionality of our site. We do not control these cookies as they are controlled by the sites that provide our add-ins, such as Google or Twitter. 

If you do not wish to use cookies, simply disable them in your browser and most parts of our site will be unaffected. For advice on how to delete and control cookies in your browser, please visit the help pages of your browser or software supplier for advice.

You can control and/or delete cookies as you wish - for details, see You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. However if you do this, you may have to manually adjust some preferences when you visit a site and some services and functionalities may not work.