Biologically, a child is a human being between the stages of birth and puberty. The legal definition of child generally refers to a minor, otherwise known as a person younger than the age of majority (Oxford University Press (Accessed 5th January 2013)). The ability to cure children with cancer has radically improved over the recent decades. Today, more than 80% of children with cancer are cured of their disease (Franklin 2014). This incredible achievement is one of the greatest triumphs in the history of medicine and is the result of numerous factors, including developments in paediatric haematopoietic stem cell transplantation (HSCT). Treatment advances for the sick child have been accomplished in various cancer treatments including chemotherapy, surgery, radiotherapy and HSCT. Whilst these therapies have vastly improved outcomes in childhood cancers, there remains scope for further improvement. Keywords HSCT • Paediatric 8.1.1 The Role of EBMT in Paediatric HSCT Changes in HSCT approaches are responsible for progress in this particular area. The role and status of transplantation have evolved. It is no longer considered a salvage therapy for patients in desperate circumstances but is now the treatment of choice for many diseases. The history of paediatric HSCT in Europe began in Poland in 1949 (Raszek-Rosenbusch), with therapeutic transfusion of bone marrow in children with leukaemia and other blood diseases. Subsequent developments in paediatric HSCT were driven on by the creation in 1974, of