BackgroundMothers with intellectual disability face socioeconomic disadvantage and social isolation, which is associated with poorer child outcomes. Social services feature prominently in the lives of mothers with intellectual disability especially those without informal support; however, the role of formal support in the lives of their children has not been explored. MethodsSeven children aged 7-11years took part in semi-structured interviews to explore their social experiences. Stories about interactions at home, school and with peers were analysed to illuminate influences, including social support, in their lives. ResultsFormal support can provide an enduring relationship for children from socially restricted homes when it focuses on the child's abilities, interests and needs as distinct from those of their mother. Child-focused support can be from a paid worker or volunteer. ConclusionsFamily support services need to apply a child focus to improve the well-being of children in vulnerable families.