Cookies are files sent by web servers to web browsers, and stored by the web browsers.
The information is then sent back to the server each time the browser requests a page from the server. This enables a web server to identify and track web browsers.
There are two main kinds of cookies: session cookies and persistent cookies. Session cookies are deleted from your computer when you close your browser, whereas persistent cookies remain stored on your computer until deleted, or until they reach their expiry date.
Google & AddThis cookies
AddThis cookies track visitor interaction and provide tools for sharing pages from this site to social media and via email, your clicks and links generate analytics which are useful for us to monitor popularity and impact of content on this website.
You can opt out of data collection for the purposes of interest based advertising using the links below.
We also make use of Vimeo on this website for playing embedded video. Vimeo therefore uses a variety of cookies to serve you the correct video experience on this site. A list of the active cookies in use by Vimeo and what they are used for can be found here. https://vimeo.com/cookie_list. For more information on Vimeo cookies, see the Official Vimeo Cookies Policy
Most browsers allow you to refuse to accept cookies.
In Internet Explorer, you can refuse all cookies by clicking “Tools”, “Internet Options”, “Privacy”, and selecting “Block all cookies” using the sliding selector.
In Firefox, you can adjust your cookies settings by clicking “Tools”, “Options” and “Privacy”.
In Chrome, you can turn off cookies by clicking “Settings”, Click Show Advanced Settings, in the “Privacy” section, click the Content settings button, in the “Cookies” section, you can change to your preferred setting (chrome://settings/content/cookies).
Blocking cookies will have a negative impact upon the usability of some websites.