This website puts small files (known as 'cookies') onto your computer to collect information about how you browse the site.
Cookies are used to:
- measure how you use the website so it can be updated and improved based on your needs
- remember the notifications you've seen so that we don't show them to you again
How this website uses cookies
| Name | Purpose | Expires |
| __utma | Used to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics. | 2 years |
| __utmb | Used to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics. | 30 mins |
| __utmc | Not used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the __utmb cookie to determine whether the user was in a new session/visit. | When you log off |
| __utmt | Used to throttle request rate. | 10 minutes |
| __utmz | Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics. | 6 months |
| seen_cookie_message | Tells us that you've seen the cookie message | 1 day |
You can opt-out of Google Analytics - please follow this link to find out more.