Tree Alert Page Topper

When we provide services, we want to make them easy, useful and reliable. Where services are delivered on the internet, this sometimes involves placing small amounts of information on your device, for example, computer or mobile phone. These include small files known as cookies. They cannot be used to identify you personally.

These pieces of information are used to improve services for you through, for example:

  • enabling a service to recognise your device so you don't have to give the same information several times during one task
  • recognising that you may already have given a username and password so you don't need to do it for every web page requested
  • measuring how many people are using services, so they can be made easier to use and there's enough capacity to ensure they are fast
  • recognising which people are visiting our web pages through social media sites, to make it possible to use targeted advertising


You can manage these small files yourself and learn more about them through "Internet browser cookies - what they are and how to manage them" If you'd like to learn how to remove cookies set on your device, visit "About cookies"

Tree Alert

Our Tree Alert application uses session cookies. These are stored for the duration of the session, and are used to associate the servers session with the connected user.

  • Cookie Name: _ga

Duration: 1 year
Purpose: To distinguish users

  • Cookie Name: _gat

Duration: 10 minutes
Purpose: Used to throttle request rate.

  • Cookie Name: _gid

Duration: 1 year
Purpose: A Google analytics cookie used to distinguish users, and work in conjunction with the _ga cookie to provide information used to compile reports on user behaviour, and to help improve the website.

  • Cookie Name: _hjTLDTest

Duration: 1 year
Purpose: Used to determine the most generic cookie path that should be used, and so that cookies can be shared across subdomains.

  • Cookie Name: _hjid

Duration: 1 year
Purpose: Used to persist the Hotjar User ID, unique to that site on the browser. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID.

  • Cookie Name: _hjFirstSeen

Duration: 1 year
Purpose: This is set to identify a new user’s first session. It stores a true/false value, indicating whether this was the first time Hotjar saw this user. It is used by Recording filters to identify new user sessions.

  • Cookie Name: _hjAbsoluteSessionInProgress

Duration: 1 year
Purpose: This cookie is used to detect the first pageview session of a user. This is a True/False flag set by the cookie.

  • Cookie Name: NID

Duration: 1 year
Purpose: The NID cookie contains a unique ID Google uses to remember your preferences and other information, such as your preferred language and how many search results you wish to have shown per page.

  • Cookie Name: SID

Duration: 1 year
Purpose: Contains digitally signed and encrypted records of a user's Google Account ID and most recent sign-in time.

  • Cookie Name: HSID

Duration: 1 year
Purpose: Contains digitally signed and encrypted records of a user's Google Account ID and most recent sign-in time.

  • Cookie Name: Ibcs

Duration: 1 year
Purpose: This cookie makes it possible for Google Docs to open many Docs in one browser. Blocking this cookie could potentially prevent Google Docs from operating correctly.

Google Analytics

Our website uses Google Analytics, a web analytics service provided by Google, Inc. (“Google”). Google Analytics uses cookies -text files placed on your computer, to help the website analyse how users use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States. Google uses this information to evaluate your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet use. Google may transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf. Google will not associate your IP address with any other data held by Google.

By using this website, you consent to the processing of data about you by Google in the manner and for the purposes set out above.

You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do this you may not be able to use the full functionality of this website. We follow the ICO privacy and electronic communication regulations as described in the ICO website.

Google Analytics sets cookies to help us accurately estimate the number of visitors to the website and volumes of usage. This to ensure that the service is available when you want it and fast. For further details on the cookies set by Google Analytics, please refer to the Google Analytics website.

Essential cookies

There are two essential cookies that allow the website to function as intended:

  • Cookie Name: joomla_user_state

Duration: session
Purpose: Allows the user to log in even if they have rejected all other cookies.

  • Cookie Name: cookieconsent_status

Duration: 1 year
Purpose: Remembers the users decision whether to allow or disable non-essential cookies.

How to control and delete cookies

We will not use cookies to collect personally identifiable information about you.

However, if you wish to restrict or block the cookies which are set by our website, or indeed any other website, you can do this by rejecting non-essential cookies, or clicking the 'cookie settings' option and individually enabling/disabling cookies.

Alternatively you may wish to visit "www.aboutcookies.org" which contains comprehensive information on how to do this on a wide variety of browsers. You will also find details on how to delete cookies from your machine as well as more general information about cookies.

Please be aware that restricting cookies may impact on the functionality of our website.