Cookies and how we use them

What are cookies?

Most internet browsers, like Firefox, Safari or Google Chrome, let websites store simple text files called 'cookies' on your computer.

They let websites remember things like your username or password so you don't need to re-type them every time you visit. They also help websites see how you use them, and this can be used to improve how websites work.

Under the European (EU) Privacy Directive, we have a legal responsibility to tell you about the kind of cookies we use, what they're for and how to turn them off. We strongly suggest you accept our cookies though, to get the best possible service from our website.

What cookies can't do

There are quite a few myths about cookies out there, so to put your mind at rest, here's what cookies can't do:

  • read your hard disk
  • get your login email address or other personal info unless you provide it
  • create viruses or destructive programmes that could harm your computer
  • instantly fill up your hard drive.
  • What cookies do we use?

    Name Purpose
    Google Analytics, Unica and Webtrends. These are known as website tracking tools and they're used on most websites. They give us general information about how people are using our website, including what pages they visit, how long they visit for and the kind of things they do. This helps us spot problems and improve the website.
    DoubleClick  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. 
    Xaxis  If you've shown an interest in buying something from our website but decided not to, these cookies will let a handful of other selected websites advertise that product to you. 
    AdInsight These cookies let us show different phone numbers on our website, depending on whether you've come to us from a search engine, website or advert, so we can see which one works best and get value for money from our marketing. 
    Maxymiser These cookies are used to help us improve your customer experience when visiting our site. They're used to perform and measure the results of online testing. They also allow us to ensure that you get the same experience each time you return to our site.
    ServiceTick This cookie allows us to review your web session in real-time to help us improve your online experience when using our website. It allows our website team to find and fix errors and improve the usability of the website. This also allows us to manage online customer surveys and prevent them from being displayed once completed.
    E.ON Your Account cookies  If you manage your account online, these cookies help our website download your information quicker and display it in the right way. The cookies also contain information about how you use our services so that we can display the content that is most relevant to you in order to improve your experience.
    E.ON First time visitor cookies The first time you visit our website, these cookies record whether you're interested in home energy or business energy. That way, when you visit again, we can take you straight to the relevant section.
    Criteo Criteo uses retargeting cookies to provide you with personalised adverts when you visit other selected websites. They use web beacons to confirm that a sale has occurred and will exclude users from further advert retargeting.

    How do I turn cookies off?

    How you disable or delete cookies depends on which version of your internet browser you're using, for instance, Internet Explorer 9.

    You should be able to check this by going to the About section in the Help or Tools section of your browser.

    To find out more, we suggest you visit, where you'll find easy to follow instructions for both deleting or controlling cookies from your browser. is a third party website, so we're not responsible for the information on it, but we're more than happy to recommend it.