What is a Cookie?

Almost every website uses cookie technology. A cookie is a small file which a server downloads to your personal computer (PC) or mobile when you visit a website. When you next return to the site using the same device, your PC checks to see if it has a cookie that the website recognises. If it has such a cookie, it communicates with the website and enables the website to read the information held in that.  This allows the site to recognise that the browser has been visited before and, in some cases, may alter the content shown to reflect this.

You can find more information about cookies at: