Cookies may be set by the website you are visiting ('first party cookies') or they may be set by other websites who run content on the page you are viewing ('third party cookies'). Reigate College's Personal Information Portal does not use any third party cookies.
Ideally a cookie should contain chocolate chip and raisins, but computer cookies are much more boring. It 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. 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.
Some people find the idea of a website storing information on their computer or mobile device a bit intrusive, particularly when this information is stored and used by a third party without them knowing. 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. If you block cookies you should be aware that you might lose some functions of the website using them.
Personally I still prefer the chocolate chip variety!