The requirement of 90 hours Continued Professional Development (CPD) per 3 year cycle is mandatory to stay registered. It is a way of keeping skills and knowledge up-to-date. CPD is split into 45 hours self-study & 45 hours with others, certified by the provider. It can consist of lectures, seminars, courses, workshops, meetings, conferences, background reading and research. All must be relevant to practice and accepted by the GOsC.