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"
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: 2 years
Purpose: To distinguish users
Cookie Name: _gat
Duration: 10 minutes
Purpose: Used to throttle request rate.
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.
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.
Cookie Typical contentDuration
_utmarandomly generated number2 years
_utmbrandomly generated number30 minutes
_utmcrandomly generated numbersession
_utmzrandomly generated number + info on how the site was reached (e.g. directly or via a link, organic search or paid search)6 months
For further details on the cookies set by Google Analytics, please refer to the Google Code website.
PREF 2 years
NID 6 months
SNID 6 months
We use Hotjar in order to better understand our users’ needs and to optimize this service and experience. Hotjar is a technology service that helps us better understand our users experience (e.g. how much time they spend on which pages, which links they choose to click, what users do and don’t like, etc.) and this enables us to build and maintain our service with user feedback.
You can opt-out to the creation of a user profile, Hotjar’s storing of data about your usage of our site and Hotjar’s use of tracking cookies on other websites by following this opt-out link.
Third party cookies - Facebook
datr 2 years
lu 2 years
locale 1 week
Third party cookies - Twitter
guest_id 2 years
k 1 week
Third party cookies - Flickr
B 2 years
Bx 1 week
How to control and delete cookies
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 through your browser settings. The 'Help' section within your browser should tell you how.
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.
If you wish to view your cookie code, just click on a cookie to open it. You'll see a short string of text and numbers. These numbers are your identification card, which can only be seen by the server that gave you the cookie. To do this on the browser of your mobile phone you may need to refer to your handset manual.
To opt-out of third parties collecting any data regarding your interaction on our website, please refer to their website for further information.