Each cookie is unique to your web browser. It will contain some anonymous information such as a unique identifier and the site name and some digits and numbers. It allows a website to remember things like your preferences or what’s in your shopping basket.
What to do if you don’t want cookies to be set:
Some people find the idea of a website storing information on their computer or mobile device a bit intrusive. Although this is generally quite harmless you may not, for example, want to see advertising that has been targeted to your interests. If you prefer, it is possible to block some or all cookies, or even to delete cookies that have already been set; but you need to be aware that you might lose some functions of the website. You can block cookies by going into your browser’s control panel/preferences.