Why This Website Uses Cookies

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:


Cookies for Google Analytics - Measuring Use of Our Services


Name Typical Content Duration
_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
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