| Cookie Name | Default Expiration Time | Host | Description |
| __utma | 2 years from set/update | Google | Used to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics. |
| __utmt | 10 minutes | Google | Used to throttle request rate. |
| __utmb | 30 mins from set/update | Google | Used to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics. |
| __utmc | End of browser session | Google | Not used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the __utmb cookie to determine whether the user was in a new session/visit. |
| __utmz | 6 months from set/update | Google | Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics. |
| __utmv | 2 years from set/update | Google | Used to store visitor-level custom variable data. This cookie is created when a developer uses the _setCustomVar method with a visitor level custom variable. This cookie was also used for the deprecated _setVar method. The cookie is updated every time data is sent to Google Analytics. |
| _ga | 2 years | Google | Used to distinguish users. |
| _gid | 24 hours | Google | Used to distinguish users. |
| _gat | 1 minute | Google | Used to throttle request rate. |
| fr | 3 months | Facebook | Used by Facebook to record information about your browser, activity and Facebook identity |
| screenWidth | 1 Year | buildertrend.net | Used to determine the device’s screen width to best optimise content |
| screenHeight | 2 Year | buildertrend.net | Used to determine the device’s screen height to best optimise content |
| ASP.NET_SessionId | End of browser session | buildertrend.net | Enhances the user experience through remembering logins, search terms, search results, etc |
| ADRUM_BT1 | 1 minute | buildertrend.net | Used to identify the users session on the server. The session being an area on the server which can be used to store data in between http requests. |
| ADRUM_BTa | 1 minute | buildertrend.net | Used to identify the users session on the server. The session being an area on the server which can be used to store data in between http requests. |
| ADRUM_BTa | 1 minute | buildertrend.net | Used to identify the users session on the server. The session being an area on the server which can be used to store data in between http requests. |
| ADRUM | Not Defined | buildertrend.net | Used to identify the users session on the server. The session being an area on the server which can be used to store data in between http requests. |
| IDE | 1 Year | doubleclick.net | Used by Google DoubleClick to register and report the website user’s actions after viewing or clicking one of the advertiser’s ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user. |
| lang | Not Defined | cdn.syndication.twimg.com | Determines users preferred/default language |
| DYNSRV | Not Defined | www.bostonspa.leeds.sch.uk | This cookie is added by our load balancer to track which web server to send the visitor to. It’s purpose is to improve the performance of the website. This is an essential cookie to the operation of the site that is always set by the load balancer and does not store any personal information. |
| wfvt_[hash] | End of browser session | www.bostonspa.leeds.sch.uk | These contain information about your general geographic location (used to remember your time zone, for example). These are known as session cookies and are deleted when you leave the site |
| NID | 6 months from set/update | Google | Most Google users will have a preferences cookie called ‘NID’ in their browsers. A browser sends this cookie with requests to Google’s sites. The NID cookie contains a unique ID Google uses to remember your preferences and other information, such as your preferred language (e.g. English), how many search results you wish to have shown per page (e.g. 10 or 20), and whether or not you wish to have Google’s SafeSearch filter turned on. |
| <facebook pixel> | Not Defined | Facebook | Used for tracking conversions from advertisements |
| PREF | 2 years from set/update | Youtube | Set by Youtube to store your preferences relating to Youtube videos embedded into pages. This cookie is set by a third party system when playing an embedded Youtube video (not merely viewing the page), and expires as soon as your browser is closed. This cookie is not required to view embedded videos. If the cookie is not set you may have to re-set any personal preferences each time you view an embedded Youtube video. |
| VISITOR_INFO1_LIVE | 9 months | Youtube | This cookie attempts to estimate your bandwidth to determine which resolution to best display the embedded video |
| YSC | End of browser session | Youtube | This cookie is set by the YouTube video service on pages with embedded YouTube video |
| NID | 6 months from set/update | Google | Most Google users will have a preferences cookie called ‘NID’ in their browsers. A browser sends this cookie with requests to Google’s sites. The NID cookie contains a unique ID Google uses to remember your preferences and other information, such as your preferred language (e.g. English), how many search results you wish to have shown per page (e.g. 10 or 20), and whether or not you wish to have Google’s SafeSearch filter turned on. |
| IDE | 1 Year | doubleclick.net | Used by Google DoubleClick to register and report the website user’s actions after viewing or clicking one of the advertiser’s ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user. |
| CONSENT | 20 Years and 1 Month | Youtube | Enables video functionality |
| DSID | 30 minutes | doubleclick.net | Used by Google to show more relevant ads |
| personalization_id | 2 years from set/update | Twitter | This cookie is set due to Twitter integration and sharing capabilities for the social media. |
| guest_id | 2 years from set/update | Twitter | This cookie is set due to Twitter integration and sharing capabilities for the social media |
