Cookies are either ‘session-based’ or ‘persistent’. The former is deleted when you close your browser. The latter is more likely to collect a greater amount of personal information, such as browsing behaviour if so-configured, and is deleted manually or on its expiration date.
To comply with EU law, we provide you with the following information about our cookies and ask you by way of a pop-up message to "opt in" to using this website with cookies.
Required cookies
The Content Management System (CMS) which provides the core functionality to power this website uses three cookies which are required when using the website as a logged in user:
ASP.NET_SessionID
Stores a temporary unique identifier for your session – no other information is stored.
Expires on exit of browser
ASPXAUTH
When you are logged in, this cookie stores a value which identifies you to your site. This value is encrypted and can only be read by the server. If you use the Remember Me function this cookie remains on your computer for 3 months, otherwise it is removed when you log out of the site.
Expires on exit of browser or 3 months (optional)
NREUM
Used by New Relic (performance monitoring) as a work around for browsers that do not support the
Navigation Timing API.
Expires on exit of browser
These cookies are strictly necessary for the functioning of the logged in site. We do not offer a way of disabling these, and you should not disable these if you want to be able to log in.
Non-essential cookies
Google Analytics
We use Google Analytics to track website traffic and usage, helping us deliver a better quality experience to our users.
_utma
Used by Google Analytics to capture and determine unique visitors and the frequency of views. __utma is written to the browser on your first visit to a site (from the browser being used).
2 year expiry
_utmb
Used by Google Analytics to establish and continue your session on the site. Each time you visit a page it is updated to expire in 30 minutes. It expires if you spend more than 30 minutes on a single page.
30 minute expiry
_utmc
Previously used by Google Analytics javascript to define a session status.
6 month expiry
_utmz
Used by Google Analytics to store the type of referral used to reach the site; e.g. direct, link, web search, etc.
Expires on exit of browser
Cookie opt-in cookie
COOKIE_OK
This is the cookie that stops the opt-in message (for cookies!) appearing each time you visit the site.
Permanent
Please note that some of the cookies used on our site are set by third parties, for example when a Twitter widget or YouTube video is embedded on to a page.
How to remove cookies from your browser
Every browser is different, and the information provided in the following links may not work for older versions of the browser you are using, but you will be able to find out how by searching the internet for "how to remove cookies from [your broswer name] [your browser version]"