Since it was founded in 1920, the Tavistock Clinic—now the Tavistock and Portman NHS Foundation Trust—has developed a wide range of developmental approaches to mental health which have been strongly influenced by the ideas of psychoanalysis. It has also adopted systemic family therapy as a theoretical model and a clinical approach to family problems. The Tavistock is now one of the largest mental health training institutions in Britain. It teaches up to 600 students a year on postgraduate, doctoral, and qualifying courses in social work, systemic psychotherapy, psychology, psychiatry, nursing, and child, adolescent, and adult psychotherapy, along with 2,000 multidisciplinary clinicians, social workers, and teachers attending Continuing Professional Development courses and conferences on psychoanalytic observation, psychoanalytic thinking, and management and leadership in a range of clinical and community settings.