The CSA does not have jurisdiction to make a child support maintenance assessment in the following circumstances:
• Where the payer is not the natural or adoptive parent (the court can order such a person to pay child maintenance where they were married to a parent and they treated the child as a child of the family); or
• Where one of the parents or the child is not habitually resident in the UK; or
• Where the parents have not separated.
In such a case, an application for child maintenance may be made to a court.