Types of cookie:
‘Session’ cookies remain in your browser during your browser session only, ie until you leave the website.
‘Persistent’ cookies remain in your browser after the session (unless deleted by you).
‘Performance’ cookies collect information about your use of the website, such as webpages visited and any error messages; they do not collect personally identifiable information, and the information collected is aggregated such that it is anonymous. Performance cookies are used to improve how a website works.
‘Functionality’ cookies allow the website to remember any choices you make about the website (such as changes to text size, customised pages) or enable services such as commenting on a blog.