We want to make our website, and the services we provide, useful and reliable.
This sometimes involves placing small amounts of information called cookies on your computer, mobile phone or other device used to access the Internet.
Cookies do lots of different jobs, like letting you navigate between pages efficiently, enabling you to use services you have specifically asked for and remembering your preferences. They also give website operators useful, non-personal information about how people use their website. You can find more information about cookies at:
- Enable services you have specifically asked for
- Collect anonymous information on the pages visited using Google Analytics. We use Google Analytics on all our websites
By using our website, you agree that we can place these types of cookies on your device.
You can stop cookies being downloaded on to your computer or other device by selecting the appropriate settings on your browser. If you do this, however, you may not be able to use the full functionality of this website.
There is more information about how to delete or stop using cookies on the About cookies website. If you wish, you can also opt out of being tracked by Google Analytics.
The cookies we use fall into 3 categories:
1) Strictly necessary cookies
These cookies enable services you have specifically asked for.
They are essential in order to enable you to move around the website and use its features, such as accessing secure areas of the website.
2) Performance cookies
These cookies collect anonymous information on the pages visited.
These cookies collect information about how visitors use a website, for instance which pages visitors go to most often, and if they get error messages from web pages. These cookies don’t collect information that identifies a visitor. All information these cookies collect is aggregated and therefore anonymous. It is only used to improve how a website works.
3) Functional cookies
These cookies remember choices you make to improve your experience. These cookies allow the website to remember choices you make (such as your user name) and provide enhanced, more personal features. These cookies can also be used to remember changes you have made to text size, fonts and other parts of web pages that you can customise. They may also be used to provide services you have asked for such as watching a video or commenting on a blog. The information these cookies collect may be anonymised and they cannot track your browsing activity on other websites.
Below we have listed all the cookies used on our sites, and which category they fit into (1, 2 or 3)
|Cookie name||Description||Cookie provider||Expires||Category|
|_utma||This cookie is typically written to the browser upon the first visit to our site from that web browser. If the cookie has been deleted by the browser operator, and the browser subsequently visits our site, a new __utma cookie is written with a different unique ID. This cookie is used to determine unique visitors to our site and it is updated with each page view. Additionally, this cookie is provided with a unique ID that Google Analytics uses to ensure both the validity and accessibility of the cookie as an extra security measure.||Google Analytics||2 years||2|
|_utmb||This cookie is used to establish and continue a user session with our site. When a user views a page on our site, the Google Analytics code attempts to update this cookie. If it does not find the cookie, a new one is written and a new session is established. Each time a user visits a different page on our site, this cookie is updated to expire in 30 minutes, thus continuing a single session for as long as user activity continues within 30-minute intervals. This cookie expires when a user pauses on a page on our site for longer than 30 minutes.||Google Analytics||30 minutes||2|
|_utmc||This cookie operates in conjunction with the __utmb cookie to determine whether or not to establish a new session for the user. In particular, this cookie is not provided with an expiration date, so it expires when the user exits the browser. Should a user visit our site, exit the browser and then return to our website within 30 minutes, the absence of the __utmc cookie indicates that a new session needs to be established, despite the fact that the __utmb cookie has not yet expired.||Google Analytics||On exit||2|
|_utmz||This cookie stores the type of referral used by the visitor to reach our site, whether via a direct method, a referring link, a website search, or a campaign such as an ad or an email link. It is used to calculate search engine traffic, ad campaigns and page navigation within our own site. The cookie is updated with each page view to our site.||Google Analytics||6 months||2|
|ASP.NET_SessionId||ASP.NET session cookie, used to identify requests linked to the same browser session.||Alterian CMS||On exit||1|
|We may embed videos from our official YouTube channel using YouTube’s privacy-enhanced mode. This mode may set cookies on your computer once you click on the YouTube video player, but YouTube will not store personally-identifiable cookie information for playbacks of embedded videos using the privacy-enhanced mode.||YouTube||Varies||All|
|These cookies are used when integrating Twitter feeds into our site’s pages and to allow the sharing of content.||Varies||All|
|There may be some occasions when we would use a Facebook “social plugin” tool to add various Facebook functions to our site, for example the “Like button”. When we do this, Facebook sets browser cookies when a user visits a page on our site which includes an embedded Facebook function. Additionally, if the user is already logged into Facebook then Facebook will know that the user has visited our site.||Varies||All|
|AddThis allow users to share content via social networking websites and email. When we provide links to third party services you find useful, they may place a cookie on your device to make their service easier to use. These cookies are used in recording user sharing and social activity and for optimizing sharing settings for the user.||AddThis||Varies||All|