If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how.
Alternatively, you may wish to visit aboutcookies.org which contains comprehensive information on how to do this on a wide variety of desktop browsers.
Cookies are small text files, used to improve your user experience by enabling that website to ‘remember’ you, either for the duration of your visit (using a ‘session cookie’) or for repeat visits (using a ‘persistent cookie’). Cookies have been around for years and are part of what makes websites work.
A cookie is a simple text file that is stored on your computer or mobile device by a website’s server and only that server will be able to retrieve or read the contents of that cookie.