What are cookies?

A cookie is a small, harmless, text file that normally contains a website name and unique user information (it will not identify you, but the computer you are using). The next time you visit that site your computer will check to see if you already have a cookie from that site. If there is an existing cookie, your computer will send the information in the cookie to the website. This will allow the site to work out how long you visit the site for and how often, and the pages you looked at, for example. By using cookies we can improve the way our site works and the relevance of the content for you. If you refuse all cookies, some parts of our website may not work. You can also view our privacy policy

Changing your cookie preferences

You can set your browser software to accept all cookies, to notify you when a cookie is issued, or not to receive cookies at any time.


Cookie name


Energy Saving Trust



These are used by the Click to Chat service.


This defaults to the UK and changes when you change to a specific nation (England, Wales, Scotland, Northern Ireland).


This helps us to determine whether a user's browser is currently running Javascript, so that we can provide non-Javascript functionality where needed.


This stores whether the user has accepted the cookie information pop-up. If the user hasn't the site will continue to present the cookie information popup.

Green Communities


This is a session ID which is unique to you for the duration of your visit to the web site


AddThis allows you to easily share information that appears on our website in a variety of ways eg Facebook, twitter and email. These cookies allow this function to operate.

Get more information about AddThis and their use of cookies at their website.


These are date tracking cookies which allow the expiration of other cookies.


This cookie will let us know roughly where in the world you are when sharing information on our website.


This cookie will log the number of users sharing.


User id and the time logged in.


This cookie will count how many times you visit the AddThis function.


Allows us to record what you are interested in so we can show you things that interest you.


This will record the service share history.


This will record the name of the last used social media.

Google Analytics

Google Analytics allows us to evaluate website and app usage. We can find out how often people visit each page and how long they stay.

Get more information about Google Analytics and their use of cookies at their website.


This cookie counts the number of times you have visited our site.


These cookies work together to calculate how long you visit our site for. The cookies expire when you leave our website.

utmz This cookie works out how you got to our website and where you are in the world. It will expire in six months
_ga This cookie is used on our EV Life (Scotland) app to distinguish users of the app by assigning a randomly generated number as a client identifier (2 years expiration time)


This cookie is used on our EV Life (Scotland) app to distinguish users of the app by assigning a randomly generated number as a client identifier (24 hrs expiration time)

Google Tag Manager


We use Google Tag Manager to set tags and code (pixels) on our websites. These pixels allow us to remarket (personalise advertising and content) and help monitor the performance of our digital marketing activities.
Hotjar We use HotJar to gather analysis and feedback. It lets us understand how users interact with our website as well as capturing user feedback through surveys or polls.


We use Facebook Pixel on our websites to deliver Facebook adverts. 


Find out more about Facebook Pixel


These cookies are used to deliver ads relevant to you.

This also includes creating advertising audiences for our marketing campaigns.

Tracking also enables us to gather evaluation on our advertising efforts.


We use You Tube to publish video content on our website.

Get more information about YouTube's privacy policy at their website.


These are session IDs which is unique to you when you visit YouTube website.




These are used by YouTube to store user preferences when viewing pages containing video content.



This cookie is used by the web page editor to store the size, position and visibility of its toolbars and modules on the website – this only appears on the Green Communities site.



This cookie relates to our user survey (it is the identification of the survey). The cookie will help the site remember that the computer has already been asked to complete the user survey so that it will not pop up again.


You have the right to access a copy of the personal information the Energy Saving Trust holds about you and to have any inaccuracies corrected. If you would like a copy of some or all of your personal information, please write to:

Data Protection Officer, Energy Saving Trust, 30 North Colonnade, Canary Wharf, London, E14 5GP

We will ask for proof of your identity before we supply a copy of any personal information. 

We regularly review our cookie information to keep it up to date. Any changes that we make will be posted on our website.