Extended longevity among adults with Intellectual Disabilities (ID) and increasing rates of diagnosis of Autism Spectrum Disorders (ASD) mean that parents are unlikely to remain primary carers throughout the lifecourse of adults with ID and ASD. In the context of decreased funding for disability services and policy moves toward de-congregated living, non-disabled (ND) siblings of people with ID/ASD are increasingly likely to be drawn into support and care roles for their siblings.