Cookies are...

...small text files that are placed on your computer when you visit a website, including ours. They can be used to remember different things, including the pages you've visited on our site, or if you've used our contrast buttons.

They can also help us improve the information we provide, by monitoring how you use our site.

More information about cookies

Cookies used for tracking purposes

We use Google Analytics, a web analytics service, to help us improve:

  • the information we publish
  • your experience on our site
  • our website's performance

_ga and _gid 

Google Analytics use these cookies to gather information about the way visitors use our site, which includes number of visitors, where visitors have come to the site from, and the pages they visit.

  • _ga expires after two years
  • _gid expires after 24 hours.


Google Analytics uses this cookie to stop analysing visits and clicks if the traffic gets too high.

  • _gid expires after one minute.

Find out how to block Google Analytics cookies

Cookies used by our website software

Our website software does not use any cookies by default. However, three cookies are created if you:

  • log in to the website
  • use our contrast buttons


Remembers if you've used a high or low contrast style. It stores data during your session help with website performance.

This cookie persists, even if you close your browser. It expires after two hours.

It does not store any information about you.


JESSIONID remembers who you are if you login to our site or fill in a form. It expires after you close your browser.

Other cookies we use

We may use other applications, services, and information feeds that use cookies.


Where we publish videos on a page, we use YouTube's privacy-enhanced mode. That means YouTube won't set a cookie that tracks your viewing history. However, it will set a cookie that tells YouTube that this session shouldn't be tracked.

For more information, read YouTube's privacy policy.

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