A cookie is a small file that is stored on your computer, which allows us to improve the quality of your visit to our Website.
They don't do anything i.e. they are not executable code and can only be read by (you and) the website that created them. You can view and edit the cookies on your computer like any other text file using a text editor (the contents are usually just strings of unique identifiers and date/timestamps). The website that created the cookie can read the contents when you are at their website.
Cookies are widely used across the internet: you may have hundreds of cookies on your computer at any one time. Each browser has its own set of cookies so, if you run multiple browsers, you will have multiple sets of cookies on your computer.
This site uses two types of cookies: session cookies, which are deleted from your computer when you close your web browser; and persistent cookies, which remain on your computer until they are deleted, or until a specified expiry date/time.
None of the cookies we use store any personal information about visitors to our site, however they may store information (such as a unique identifier) that enables a cookie to be linked to data we already store.
Most browsers allow users to control which cookies are accepted and to delete existing cookies. Please refer to your browser's 'Help' function for further instructions. Refusing to accept cookies will, in many circumstances, have a negative impact upon the usability of a web site.