I don’t include advertising on this site, but I have basic Google Analytics enabled just for vanity metrics. That means I need to include a cookie-warning, according to the EU ‘ePrivacy Regulation’ (and implemented in the UK ‘Privacy and Electronic Communications Regulations’).
This site stores a single cookie to store the fact that you’ve dismissed the cookie-warning banner.
Additionally, Google Analytics will see their cookies as a result of you accessing this site.