What happens if the court decides neither parent is suitable for residence?
If neither parent is suitable for residence of the child then you've got the difficult decision of seeing if someone else is suitable or of the local authority making a care order. It wouldn't usually come out of a dispute between parents as to residence. The court in most circumstances will make a decision that will allow the children to live with one or both of them. If however a court decided within the context of a court application that there were worries about these parents then it would ask the local authority or for CAFCASS (the Children and Family Court Advisory and Support Service) to intervene and make recommendations. And if it felt that the children would actually be at risk if they remained with their parents, then it would look for other options, other relatives, or as a last resort a local authority care order.