All registrations are considered binding on receipt of the registration and subject to the following cancellation policy. If cancellations are received in writing up to one calendar month before the conference date, the registration fee will be refunded less a 25% service charge. Thereafter, the full registration fee will apply. Cancellations are only valid on receipt of an official cancellation number issued by the Chatham House Conference Unit. Substitutions for registered delegates may be made at any time, but for security reasons we require prior notification.