Cookies used on


Essential cookies help make our website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

Cookie name What it's for Expiry
EOSRoles Stores the role information of users that have logged in (e.g. Admin, Patron, Instructor, etc.) 208 days
ASP.NET_SessionId Used to maintain user session Session
.DISCOVERYAUTH Used to ensure user is authenticated. Session
[Site Name] or [Site URL] Stores site name or site URL (Maintenance | General Settings | OPAC Preferences | Sites) 1 day
CartShippingAddress_[Code] Stores shipping address when patron chooses to remember address (Encrypted) 30 days


These cookies are used solely for functionality but may also contain elements of tracking to help monitor and improve how we present content to you. We use embeds from third party providers to present content in different forms such as audio, video or some other interactive element.

Cookie name What it's for Expiry
__atuvc, __atuvs, uvc, loc

Used by AddThis social sharing widget which is embedded in our websites to enable visitors to share content with a range of networking and sharing platforms. It stores an updated page share count on certain exhibition pages.

For more information, please visit:

2 years
_gs, _gu, _gw

Get Site Control provides a mechanism for spotlighting important information through widgets overlays on As part of their service, Get Site Control also uses cookies to provide insights such as the IP address, location, OS, browser and device type of those who interact with Get Site Control widgets.

For more information, please visit:


Personalised advertising

Marketing cookies are used to track visitors across our website. The intention is to display personalised or interest-based advertising that is relevant and engaging for the individual user.

Cookie name What it's for Expiry

Used by Quantcast to collect anonymized data which analyses log data from different websites to create reports that enables the website owners and advertisers provide ads for the appropriate audience segments.

For more information, please visit:

1 year
APISID, HSID, SAPISID, SSID, __Secure-APISID, __Secure-3PAPISID, __Secure-3PSID, __Secure-APISID, __Secure-HSID, __Secure-SSID

These cookies are used by Google to display personalized advertisements on Google sites, based on recent searches and previous interactions.

2 years
NID This cookie contains a unique ID Google uses to remember your preferences and other information, such as your preferred language (e.g. English). 6 months


Statistic cookies help us to understand how visitors interact with websites by collecting and reporting information anonymously.

Cookie name What it's for Expiry

Used by Google Tag Manager to control the loading of a Google Analytics script tag on all our web pages.

For more information, please visit:

1 day
gat_UA-#, _ga, _gid

Used by Google Analytics which collects information about how our visitors use the website. We use this information to compile reports and to improve the website experience. The cookies collect information such as, the number of visitors to the website, where visitors have come from and the pages they visited.

For more information, please visit:

2 years

How to opt out and control your cookies?

We use cookies to help improve your experience online but only do so based on your consent. This means that if you are not happy for us to set cookies on your computer, there are a number of things you can do:

Most web browsers allow some control of most cookies through their settings. You can set your web browser to:

  • Reject all cookies
  • Allow only 'trusted' sites to set them
  • Accept cookies from websites only for the duration of your visit.

If you wish to restrict or block the cookies, which are set by NPG websites, or any other website, you can do this through your browser settings. The Help function within your browser should tell you how. Below is a list of popular browsers with details on how to do this.

For more information on cookies and their uses, visit the cookies page on the Information Commissioner’s Office website.

Explore our Privacy Notice