Failure to Attend and Short Notice Cancellation Policy If a patient fails to attend 2 appointments or doesn’t attend within a 2 year period of time, in line with NHS regulations, we reserve the right to deny any further NHS treatment. We require a minimum of 2 working days’ notice should you need to cancel or reschedule an appointment. If the cancellation is made less than 4 hours before the appointment time, this will be marked as a failed to attend. In the interest of fairness, this policy is extended across our entire patient base so no one person is discriminated against another.