The Disabled Children and Young Peoples Participation Project (DCYPPP) was established by Barnardos (Northern Ireland) in 2002 to explore ways of involving children and young people with disabilities in decision-making processes within Children's Services Planning of the Health and Social Services Board. Over 200 young people have participated in its 10 years of existence. This article describes how the DCYPPP practice has evolved in support of the young people and the factors that contribute to its successes. Policy-makers and professionals at all levels need to recognise the valuable contribution children and young people with disabilities can make and actively seek their engagement.