Mosaicism is an area of rapid expansion of knowledge, and cutaneous mosaicism has the edge in this field due to the longstanding clinical descriptions and accessibility of tissue sampling. This meeting is for anyone interested in mosaicism in general, and cutaneous mosaicism in particular. The programme is packed with the best speakers in the field from around the world, each with different perspectives and experience, and talks will therefore be a mixture of clinical and scientific. The audience will be drawn from Medical specialties including Dermatology, Paediatrics and Clinical Genetics, and from Scientific specialities including Dermatology, Genetics and Cancer.In the interests of furthering knowledge and advancing science in this field this meeting is free to attend. This has been made possible by the generous support of the Livingstone Skin Research Centre at UCL Great Ormond Street Institute of Child Health. Catering will not be provided, however there is an on-site café and canteen within the ICH, and many excellent cafés and restaurants in the surrounding streets. Although the meeting is free, registration is required online via the link above.