Between work, appointments and other family commitments, many parents will face a decision of whether to leave their child home alone during the summer holidays at some point. Our ‘Home or Out Alone’ campaign aims to help parents make the right decision about leaving their children at home safely or letting them leave the house unsupervised, a tricky decision for many to make that will differ from child to child. • There’s no legal age a child can be left home alone as every child matures differently, but it’s against the law to leave a child alone if it puts them at risk.