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Here at, we recognise and understand the importance of providing information which is accessible to the widest possible audience, regardless of an individual’s technology or ability.

Standards and guidelines

To ensure wide and inclusive accessibility, we do our very best to follow established web standards and accessibility guidelines. In particular, we measure ourselves against the W3C Web Content Accessibility Guidelines (WCAG) 2.0, and aim to have all our pages meet (or exceed) level ‘A’ compliance. Many of our pages meet levels ‘AA’ and ‘AAA’, and we consistently work on improving this wherever possible.

Our website uses valid HTML and cascading stylesheets (CSS), compliant with relevant standards. This allows us to separate the majority of presentation elements from our site content, making it more accessible to visitors who use assistive technologies such as screen readers, or a text-only browser.


We recognise that there are no ‘standard users or devices for browsing information online, and we have therefore tried to ensure that the site works correctly across a variety of different interfaces.

Given that most visitors to this website use graphical web browsers, all efforts have been made to ensure that displays correctly on these. In order, non-standards-compliant browsers (e.g. Internet Explorer 6 and earlier), some parts of the site may not work as intended. If you use one of these browsers, we recommend upgrading to the most recent version.

We have also done tests with screen readers and other accessibility software, but given the wide variety of interfaces, there may be some aspects of the site that we have missed. Of you find an error which is making it difficult to use our website, please use our Contact Us form to let us know, and we’ll do what we can to fix the issue.


While we follow accepted guidelines for accessibility and usability as closely as we can, it is not always possible to do so for every area of the site. For example, our Coverage Checker is currently available in a visual-only format, due to reliance of these tools on mapping software. If you require information from this tool, please contact us, and we will be happy to provide it via email.

Tips for improving your experience

The majority of text on this website is 12 pixels high when displayed on a graphical web browser. If you find that this is too small, most modern browsers allow you to increase text size by using a ‘Zoon’ or ‘Text Size’ option. The typical keyboard shortcut for increasing text size is Ctrl, +, and Ctrl,0 for returning text to its default size. Where possible, this site has been designed to allow for the text size to be increased, though at very large sizes, certain elements of the site may not display as intended.

If you are having difficulty finding the page you’re looking for, we provide a full Sitemap page, which lists the link to every key page on our website – including all pages for our range of handsets.

It is possible to navigate with the sole use of the keyboard. However, our website does not presently include a visual indication of keyboard focus in most graphical web browsers. If you require this in order to browse, we recommend disabling stylesheets and using your browser’s default indication.

We welcome your feedback

If there is anything regarding accessibility that you feel we have overlooked, or if you have a comment or suggestion, please get in touch with us by using our Contact Us form. We welcome your feedback, as it’s the best way to help us improve the quality of our service.