A cookie is a small text file that is used to help your browser navigate through a particular website by storing the cookie file. A cookie usually contains the name of the website that the cookie has come from, the length of time the cookie will last on your computer and a value (normally a randomly generated unique number). To find out more on cookies visit allaboutcookies.org or aboutcookies.org which are both good resources of information.
Like a lot of other websites we use Google Analytics to track the number of visitors, page impressions and time people spend on the site. Data is anonymously aggregated and isn’t tracked to an individual person – a list of the analytics cookies can be found at: https://developers.google.com/analytics/resources/concepts/gaConceptsCookies