Congenital interventional cardiologists undergo at least five years specialist training in congenital cardiology. The first three of these cover all aspects of congenital cardiology including with regular exposure to catheter procedures. During the other two years the trainee will sub-specialise in cardiac catheterisation and build up experience towards becoming an independent operator. All units carrying out catheter procedure offer this training and trainees often spend a year of this training (or an additional year) at another UK unit or abroad. Following ascertainment of certificate of completion of training (CCT) some units offer a post CCT fellowship allowing an additional year's training. Once appointed as a consultant there is an ongoing process of continued medical education (CME) which includes regular discussion with operators from other units and device specific training and proctoring when new procedures, techniques and devices become available.