In 2011 there was a change to European Law which is aimed at giving website users more control over the data which is stored about them. You can read more about it here http://www.ico.gov.uk/
Controlling the information websites can collect You can manage your browser cookie settings to accept or reject all cookies or individually by website. You can set your browser to prompt you when a website would like to store a cookie on your computer. All browsers settings are different and we would recommend you use the help option in your browser menu to check your settings.