The reality for many families where there is chronic illness, mental health problems, disability, alcohol or substance misuse is that children under the age of 18 are involved in caring. Many of these children - known as 'young carers' - will be providing regular and significant care, either episodically or over many years, often 'hidden' to health, social care and other welfare professionals and services. These children have most often been invisible in social policy and professional practice.