We want to provide online services that are easy to use, useful and reliable. This can involve placing small amounts of information on your computer or mobile phone or other device. These include small files known as cookies. There's a link to general advice about managing cookies at the end of this page.
Cookies cannot be used to identify you personally.
These pieces of information are used to improve services for you through, for example:
|_utma||randomly generated number||Expires after 2 years|
|_utmb||randomly generated number||Expires after 20 minutes|
|_utmc||randomly generated number||Expires when you close your browser|
|_utmv||information about how the p age was reached||Expires after 6 months|
|_utmz||randomly generated number||Expires after 2 years|
|NID||randomly generated number||Expires after 6 months|
|PREF||randomly generated number||Expires after 2 years|