When parents share custody of a child, it is usually in the child’s best interest for them to have an ongoing, positive relationship with both parents. However, concerns can arise when a co-parent’s mental health appears to impact their ability to care for the child responsibly and safely. In such situations, there are various legal options that a concerned parent can take. Here, we will explore the range of legal steps available and the evidence they may need to provide.
When parents share custody of a child, it is usually in the child’s best interest for them to have an ongoing, positive relationship with both parents. However, concerns can arise when a co-parent’s mental health appears to impact their ability to care for the child responsibly and safely. In such situations, there are various legal options that a concerned parent can take. Here, we will explore the range of legal steps available and the evidence they may need to provide.
What are the signs and behaviours that indicate potential mental health issues?
When a parent suspects their co-parent’s mental health may affect their child, recognising common behaviours and patterns is essential. Warning signs in the co-parent can include:
- Erratic or inconsistent behaviour (such as mood swings, aggression, or frequent confusion)
- Neglect of the child’s basic needs (failing to provide meals, hygiene, or supervision)
- Self-harm or substance abuse that affects their behaviour around the child
- Social withdrawal or lack of engagement with the child
- Inappropriate actions or statements that may confuse or alarm the child
Additionally, children may exhibit signs they are struggling with the co-parent’s behaviour. These signs can include anxiety, reluctance to spend time with the other parent, withdrawal from friends and activities, behavioural issues, or developmental regression.
What evidence can and should be collected?
If a parent is concerned that a co-parent’s mental health affects their ability to care for the child, gathering evidence is crucial. The court will require objective, documented evidence to assess the situation properly to avoid unjustly penalising a parent who may manage a mental health condition responsibly. Useful evidence might include:
- Medical records (if accessible) that indicate a diagnosis, history of mental illness, or prescribed medications, especially if those medications affect behaviour. You will not be allowed to produce records directly relating solely to your co-parent, but may adduce medical evidence that includes the impact on the child and/or yourself.
- Professional evaluations from a mental health professional or social worker assessing the co-parent’s capability. Again, this would need to be provided as part of other assessments or a court order.
- Witness statements from relatives, teachers, or other caretakers who have observed concerning behaviour.
- Police or medical reports in instances of extreme situations, such as domestic incidents.
- Journal entries that document concerning behaviour over time.
A parent should avoid gathering evidence in ways that infringe on the other parent’s privacy or manipulate the child. Family law prioritises the child’s well-being, so using respectful and lawful means of obtaining evidence is vital.
What mental health conditions and medications should I be aware of?
Some mental health conditions can significantly affect parenting capacity if left untreated or unmanaged. Conditions that might raise concerns include severe depression, bipolar disorder, schizophrenia, or personality disorders, particularly if these conditions result in erratic or unsafe behaviours. Substance abuse is another major factor that can lead to unsafe environments for the child.
Medications may also be a factor if they impact the co-parent’s behaviour, such as sedatives, which could impair their ability to supervise the child. However, a parent taking medication responsibly and managing their condition may not necessarily pose any threat. It is essential to focus on the practical impact of the condition or medication on the child’s welfare rather than the diagnosis or prescription alone.

What are the legal options I can take if I have concerns about my ex’s mental health?
There are several legal avenues for a parent concerned about a co-parent’s mental health. These options prioritise the child’s welfare and can result in different outcomes based on the unique facts of the case and the severity of the situation.
Child Arrangements Order
A parent can apply for a Child Arrangements Order which will determine where the child will live, as well as how and when the child will have contact with the non-residential parent. If a co-parent’s mental health is deemed a concern, the court may restrict or supervise contact to ensure the child’s safety. These orders can vary from minimal supervision to stricter conditions, such as requiring another responsible adult to be present during visits.
Specific Issue Order or Prohibited Steps Order
If there are particular aspects of the co-parent’s behaviour or circumstances that require immediate action, the court offers two other options:
- Specific Issue Order: This order applies if the concerned parent wants to ensure or prevent certain decisions, such as requiring the co-parent to undergo mental health treatment or attend a parenting course.
- Prohibited Steps Order: This order can prevent the co-parent from taking certain actions that may pose a risk to the child, such as prohibiting unsupervised visits until there is a marked and measurable improvement.
Supervision Orders
In cases where the court does not see the need to remove the child from a parent’s care but acknowledges potential concerns, a Supervision Order may be issued. This order allows the local authority to oversee the parent’s interactions with the child, ensuring a safe environment. Supervision Orders are typically temporary but can be extended if necessary.
Seeking the child’s wishes and feelings
Children have a voice in things such as where they want to live and who with, especially as they grow older. Typically, children aged 10 and above are encouraged to express their preferences generally through a CAFCASS (Children and Family Court Advisory and Support Service) officer.
What are the possible legal outcomes?
Based on the court’s findings and the severity of the concerns, several outcomes are possible:
- Changing where the child lives/who they live with. In extreme cases, the co-parent may lose care of the child if their mental health severely endangers the child’s well-being.
- The court may order that the co-parent has supervised contact until they can demonstrate stability and compliance with treatment.
- The court may mandate mental health treatment, parenting courses, or drug rehabilitation programs to support the co-parent in meeting parenting responsibilities.
What support is available?
While the court system aims to ensure children’s welfare, supporting the mental health of the co-parent can also benefit the child’s long-term development. By identifying signs, gathering objective evidence, and exploring appropriate legal options, a parent can address these concerns effectively and responsibly. Ideally, a parent concerned about their co-parent’s mental health should aim for a balanced approach, addressing immediate safety needs while potentially supporting the co-parent’s access to therapy, support groups, or parenting resources.
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