This error usually occurs when you try to register on our website then click the return arrow in your browser. Doing this will attempt to re-submit the registration form and will throw up the error #27.
To rectify this, please try and log in. You should no longer have any issues.
If you are still experiencing this error please contact either your account manager directly, or call us at 01344 867088 or email firstname.lastname@example.org.