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We’ve tried to build this site with accessibility and useability in mind. We want you to be able to access this site’s information with assistive technology, screen magnifiers and your operating system’s speech recognition software.

We’d be very grateful for your feedback on how accessible our site is for you, so that we can keep improving it. Please email feedback to

Help using computers, the web and assistive technology

We have made the site as usable as we can, but you might have a better experience if you change the settings on your computer to suit your individual needs.

For example you might change the site’s colours, increase the text size, or have the site spoken aloud.

For help customising your experience using accessibility features already on your computer, or by installing extra assistive technologies, try these sites:

Browsers we support

Our accessibility features work when using the following browsers:

  • Chrome
  • Safari
  • Firefox
  • Android browser
  • Internet Explorer 9, 10 and 11

We have chosen these browsers because they are the most common, covering over 98% of all web users.

Alternative formats

If you want any information on this site in an alternative format please email with your details, and tell us what you need.


To make things easier for screen reader users, all images in our site have alternative text that clearly describes what they show.


We try to use link text that makes sense out of context, so that what we’re linking to is clear to everyone.


We use YouTube for our videos because it’s the most accessible way to present videos online that we know of, however, we cannot control the accessibility of YouTube video functionality.

Accessibility problems

If you have trouble accessing any part of our website, please let us know at