You can book online here:

For non-members: Use the following code if you’re booking before 12 September to receive an early bird discount: AGBUS21EARLY

Members will receive a discount code via email that they should use to get a special member rate. Early bird discounts are also available to members – details will be included in the email sent to you. If you have not received an email with details of how to book online as a member by the end of July, please let us know.