For bookings, orders, membership and general enquiries please contact our Customer Support Centre:
Monday to Friday: 3.30am - 5:30pm (GMT)
Sunday: 3:30am - 8:30am (GMT)
The CISI welcomes all feedback on any aspect of our customer service and products. To enable us to deal with your feedback appropriately and in a timely manner, we have a number of online forms you can complete. All feedback will be acknowledged within 48 hours.
If you would like to leave feedback regarding the CISI please complete the appropriate form here