Dan Stark trained as a medical oncologist in Cambridge, London and Leeds. He has been the medical lead for the cancer service for young people in the Yorkshire region since about 2006. He has played his part in building a specialist clinical service for young people in Leeds since the late 1990s. He treats young people with testis cancer or sarcomas, and also supports adult clinicians looking after TYA if they find that helpful. Dan oversees a local research programme mainly about patient experience, using quality of life data in clinical practice, and novel models of follow-up after cancer. He currently holds competitive research grants from the NIHR, the ESRC and European Union. He is currently Chair of the Clinical Studies Group of the National Cancer Research Institute, for Teenagers and Young Adults with Cancer Dan supports the evolution of NHS policy for TYA cancer care. He sits on the NHS England Clinical Reference Group for Children and TYA with Cancer, where he chaired the consultation on the NHS Service Specification for TYA with cancer. He has been at the heart of several European initiatives in TYA cancer since 2010. He is currently Chair of the European Network for Teenagers and Young Adults with Cancer.