We continually review and improve the accessibility of this site. If you have any feedback, please contact us.

How to change webpage text size and page zoom

Using keyboard navigation

You can use keyboard navigation as an alternative to the mouse for browsing websites. This increases accessibility if you have difficulty using a mouse or pointer tool.

You can use the arrow keys to scroll up or down pages, the tab key to move between links ('skip links'), and return or enter to select. The backspace key takes you to the previous page.

Changing the contrast

You can change a page to high contrast mode, here‘s some information to help you:


The content of images used on this site are described using alt tags (alternative text).

Video or audio formats

We'll include transcripts and captions with all videos we publish online.


This website includes PDFs and Microsoft Word and other documents.

  • PDF (Portable Document Format) files 
    This website may use PDF (Portable Document Format) files, also known as Adobe files to make publications available online. To open, print and/or save these files, you will need Adobe Acrobat Reader which you can download for free from 
    Download Adobe Acrobat Reader
  • Microsoft Word 
    This website will provide accessible Word documents. Document links indicated by .doc will open using the Word processing package you have on your computer, or you can download the free Microsoft Word Viewer to open and read .doc documents. 
    Download Microsoft Word Viewer
  • Microsoft Excel 
    Document links indicated by .xls will open if you have the full Excel version from Microsoft, or from the free Excel Viewer (to open, view and print .xls files)
    Download Microsoft Excel Viewer
  • Microsoft PowerPoint 
    Presentations links indicated by .ppt will open a slideshow if you have the full PowerPoint version from Microsoft, or from the free PowerPoint Viewer (to open, view and print .ppt files). 
    Download Microsoft PowerPoint Viewer