Background
The mother and father lived in Australia, where their son B was born in 2021. The mother brought B to England in February 2025 with the father’s consent for a temporary visit so that she could help care for her seriously ill parents. The stay became prolonged, and in September 2025 she enrolled B in an English school against the father’s wishes. The mother ultimately accepted that B had been wrongfully retained under the 1980 Hague Child Abduction Convention.
The father sought B’s summary return to Australia. The mother resisted under Article 13(b), alleging domestic abuse and arguing that returning would seriously damage her mental health because she would have to leave her parents, with resulting harm to her ability to care for B. A jointly instructed psychiatrist considered the mother at serious risk of significant clinical depression, potentially affecting her emotional availability and responsiveness to B. The High Court nevertheless ordered B’s return, and the mother appealed.
The Court’s Holding
The Court of Appeal unanimously dismissed the appeal. It held that the High Court judge was entitled to find that the evidence did not establish the high Article 13(b) threshold: a grave risk that returning B would expose him to physical or psychological harm or otherwise place him in an intolerable situation. Although the mother faced a serious risk of depression, the expert evidence described only a possible negative impact on her parenting, particularly if the condition became moderate or severe and remained persistent or unresponsive to treatment. That did not sufficiently establish grave harm or intolerability for B.
The Court also upheld the treatment of the domestic-abuse allegations. Taken at their highest, they did not themselves cross the Article 13(b) threshold, so protective measures were not necessary to dispose of that strand of the case. Although the High Court should not have stated without supporting analysis that the father’s undertaking would be enforceable in Australia, that error did not affect the outcome.
The Court said it would have been better to allow the psychiatrist to give brief oral evidence because her report arrived on the last working day before the hearing. Nevertheless, the absence of oral evidence caused no procedural unfairness and did not undermine the decision because the written evidence was sufficiently clear and further questioning was unlikely to change its material effect.
Key Takeaways
- In a Hague Convention mental-health case, the court must assess the nature of the risk to the returning parent, the likelihood that it will materialise, and the resulting consequences for the child.
- A serious risk of parental depression does not by itself satisfy Article 13(b); the evidence must establish a grave risk of harm or an intolerable situation for the child.
- Foreign undertakings require careful scrutiny for practical effectiveness and enforceability, but an unsupported finding about enforceability may be immaterial when the underlying allegations do not cross the Article 13(b) threshold.
Why It Matters
The decision reinforces the evidential distinction between a likely deterioration in a returning parent’s mental health and the separate question whether that deterioration creates a grave risk for the child. General or conditional evidence of adverse effects on parenting will not necessarily meet Article 13(b)’s demanding threshold.
It also emphasizes sound procedure when expert evidence arrives shortly before a Hague hearing. Summary proceedings do not automatically eliminate the need for focused oral evidence, while courts relying on undertakings must examine their real effectiveness in the child’s country of habitual residence.