Cookie Policy

In order to give you the best experience we use cookies to personalise content and ads, as well as analyse traffic and behaviour to improve our website. We use third party tools to understand more about your use of our site and interaction with our advertising campaigns. All data we collect is anonymous. You consent to our cookies if you continue to use this website.


What are cookies?

A cookie is a small text file which is stored on your computer, which are required to enable certain functionality. Sainsbury’s Energy uses cookies to remember users during a visit and upon return to our site. Cookies are used to help us understand how our customers use our websites and we use this information to help plan improvements to the site and to enable us to get to know you better, so we can provide a better experience.


What cookies does our website use?


Google analytics

This tag gives general information about how people are using the website, including what pages they visit, how long they visit for and the kind of things they do. This information helps spot problems and improve the website.


Sessions cookies

Session cookies are used by us to recognise a user throughout a visit. This enables us to remember information that you have entered, for example, the product you have selected during a purchase which can then be used at each stage of processing your purchase. Session cookies are also used to remember you when you log in for the duration of your visit. The session cookie will be erased when you close your browser, so next time you visit the site it will not recognise you and will treat you as a completely new visitor.


Sessions cookie used for email quote

Session cookies are used to store a user’s energy quote details so that without being logged in they can quickly access their previous quote when they return to our website. The information is saved for 30 days from when the quote was provided.



Hotjar is a powerful tool that reveals the online behaviour and voice of your users. By combining both A) Analysis and B) Feedback tools, Hotjar gives you the ‘big picture’ of how to improve your site’s user experience and performance (conversion rates).

The Analysis tools allow you to measure and observe user behaviour (what users do on a webpage/website) while the Feedback tools allow you to hear what your users have to say (Voice of User/Customer). For more information visit:


Force24 - website cookie

We use Force 24 (our email service provider) to send our HTML email communications. This cookie allows us to review how visitors from email campaigns interact with our site.


Force 24 - email pixel

Our emails may contain a single, campaign-unique web beacon pixel to tell us whether our emails are opened and verify any clicks through to links within the email.

We may use this information for purposes including determining which of our emails are more interesting to users, to query whether users who do not open our emails wish to continue receiving them and to inform and aggregate how many users have clicked on our email links.

The pixel will be deleted when you delete the email.


DoubleClickID \ Google

This is an anonymous, unique identifier used to track how successful our advertising is. These cookies allow the device’s IP address to be sent to a website, but it doesn’t store the IP address or any other personal data.


Google Adwords and Google Dynamic retargeting

We use these cookies on a small number of pages to see when people have come from specific websites, search engines or online advertisements. This helps us to see how people find us and how well our marketing is working.



ResponseTap is a phone call analytics tool, used to understand the customer interaction between the website and the call centre. Three cookies are used by ResponseTap to help demonstrate this journey so the business can improve their customer experience. These cookies are used to help ResponseTap collect information about how visitors use our website. We use the information gathered to compile reports that help us to understand how people interact with our business. The cookies store unique identifiers that allow ResponseTap to track a visitor’s progress through our website over time.



YouTube registers a unique ID that is used by Google to keep statistics of how the visitor uses YouTube videos across different websites.


Trust Pilot

The following cookies are set by Trust Pilot, a social commerce suite providing independent reviews of our products from verified purchasers.


Visual Web optimiser

Visual Website Optimizer is a full service CRO platform which offers AB testing, multivariate testing and user insights such as heatmaps in the variants that are being tested.

The platform allows us to make changes to individual pages, templates or sections of the site and to test performance of the variant in comparison to the control.

We may set up several goals for each test to allow us to measure performance on several metrics such as engagement (bounce rate), click to start quote, completed quotes, and sign ups. These goals are set up directly in VWO and so are not dependent on goals being set up in GA. It is, however, possible to integrate VWO with GA to pull results into GA for additional insights and to further segment results.

For more information please read:


FAQs, search and Live Chat

We have partners that provide our FAQs, site search and Live Chat functionality. Cookies are used to remember a user during a visit so that we can see which features our users find most useful.


Turning cookies off by changing settings from within your browser

It’s easy for you to enable and disable all Sainsbury’s Energy cookies but won’t stop all cookies from other websites being set. To do this you may change your settings from within your browser.

The instructions for these vary from browser to browser and they may change from time to time as new versions are released.

Here are some links to instructions for the most common browsers:


Microsoft Internet Explorer

Mozilla Firefox

Google Chrome



For other browsers, try searching for “managing cookies in (browser name)”.