In 2005 guidance published by the National Institute for Health and Clinical Excellence (NICE) recommended all young people in England aged 15-24 years with cancer should have access to specialist age-appropriate cancer care. There are 13 principal treatment centres (PTC) in England linked to other regional hospitals that are designated to deliver age-appropriate care. While the way care is delivered is different in each PTC they have a common philosophy of care. Professionals and patients say ‘specialist age-appropriate care’ is “better” for young people, but there is limited evidence to support this. BRIGHTLIGHT is generating the evidence to underpin future policy recommendations.