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

What are cookies?

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display 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.

How do we use cookies?

The cookies we use are to enhance your user experience on this site. Several of our sites use cookies to remember:

  • your search criteria, such as language selection in the drop-down menu.
  • your most recent searches.
  • if you answer a question in a popup box or check a check box.
  • your login details.
  • if you have accepted that we can use cookies (so that you are not asked again).

Enabling these cookies is not strictly necessary for the website to work but it will provide you with a better browsing experience. You can delete or block these cookies, but if you do that some features of this site may not work as intended.

The cookie-related information is not used to identify you personally and the pattern data is fully under our control. These cookies are not used for any purpose other than those described here.

Use of third-party cookies

This site is assisted by external companies to enhance the user experience, to integrate the site with social media, to display advertisements and to log user data, such as how many people visit the site and which pages are popular.

These companies may place and / or recognize cookies in your browser each time you visit us. This website has no influence on the behaviour of third-party cookies.

Third party privacy terms

If you want to read more about how external companies' cookies behave, you can do so on their privacy pages.

How to control cookies

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. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.

Cookies explained

The video below gives a good explanation of what cookies are and how they are used on this and other websites.