Having problems with our site?

We have taken every care to ensure this site displays properly on as many different web browsers as possible, but from time to time things may not behave themselves.

If you are experiencing difficulties viewing pages on this site, please try the following steps:

• Clear your browser's cache
  This is different from browser to browser, but it usually located under the "Tools" > "Options" menus - see your browser's help file for more information.
• Check another website
  Are other websites displaying properly? If not, you may have a problem with your browser, computer or internet connection.
• If you are having problems with our ratio calculator
  We recommend that you download the ratio calculator spreadsheet and run it in your spreadsheet program - this allows you to save your results. If you want to run it in your browser, please follow the advice given on the ratio calculator page.

Still having problems?

If you have tried the steps listed above and are still having problems with our site, please contact us. We are always keen to hear your comments and feedback - it helps us make our site and services better, and helps you to get the most out of dealing with us.