Can I stop my ex introducing a new partner to the children?

by Kidd Rapinet on June 4, 2026
two young girls hugging

The separation questions family lawyers are being asked

During divorce many people simply want to know: what is normal, what crosses a line, and when should they seek legal advice?  Topics include new partners, boundaries after separation and ongoing disagreements involving children.

Here we explore a few commonly asked questions arising during modern separations.

Can I stop my ex introducing a new partner to the children?

This is one of the most emotionally charged issues separating parents face.

In most cases, a parent cannot control whether the other parent introduces a new partner to the children unless there are genuine welfare or safety concerns.

However, timing and communication can make a significant difference. Difficulties often arise where introductions happen very quickly after separation or where children are struggling emotionally with changes in family life.

The court’s focus will always be on the welfare of the child rather than disagreements between adults. Parents are usually encouraged to approach these situations calmly and avoid placing children in the middle of conflict.

Can recordings of arguments be used in court?

Increasingly, clients arrive with recordings taken during arguments or family disputes.

While recordings can sometimes become relevant in family proceedings, particularly where there are allegations of threats or abusive behaviour, the situation is rarely straightforward.

Secretly recording conversations, particularly involving children, can create additional difficulties and may not always assist a case in the way someone hopes.

Family courts are generally more interested in patterns of behaviour and the overall welfare of children than isolated moments recorded during emotional situations.

Anyone considering relying on recordings should seek legal advice before doing so.

What if my ex is turning the children against me?

Allegations that one parent is undermining a child’s relationship with the other parent are becoming increasingly common.

This can include negative comments, limiting contact, pressuring children to take sides, or involving them in adult disputes.

The courts take these concerns seriously because children generally benefit from having a healthy relationship with both parents where it is safe and appropriate.

At the same time, these situations are often highly emotional and complex. It is important for parents to remain child-focused, avoid retaliatory behaviour, and keep communication constructive wherever possible.

Can I change the locks after separation?

This is another question family lawyers hear regularly.

The answer will depend on factors including property ownership, occupation rights, safety concerns, and whether children are living at the property.

People are often surprised to learn that changing the locks without agreement can sometimes complicate matters further, particularly where both parties have legal rights relating to the home.

Where relationships have become hostile or safety is a concern, legal advice should be sought promptly before taking action.

Should I keep evidence during a separation?

In some situations, yes.

It can be sensible to retain important financial documents, copies of relevant communication, or evidence relating to issues involving children or alleged abusive behaviour.

However, there is a difference between sensibly preserving information and becoming consumed by gathering evidence against the other person.

Family proceedings are rarely helped by escalating hostility or constant surveillance of an ex-partner’s behaviour. A measured and practical approach is usually most effective.

Keeping conflict from escalating

Relationship breakdown is rarely just about legal paperwork. For many people, it involves uncertainty, heightened emotions, concerns about children, and anxiety about the future.

While online information can offer general guidance, every family situation is different. Seeking advice early can often help separating couples understand their position more clearly, avoid unnecessary conflict, and make informed decisions at an already difficult time.

Although general information can be helpful, every family situation is unique. Obtaining tailored legal advice at an early stage can help people understand their position, avoid common mistakes, and make informed decisions during an already difficult time.

This article was brought to you by Kidd Rapinet’s family solicitors. You can book an appointment with any of the family lawyers across our other offices in Aylesbury, Canary Wharf, Farnham, High Wycombe, Maidenhead or Slough, using the form provided.  Please use the links provided to find more information on divorce or separation, child arrangements and other areas of family law.

These materials and content have been prepared for the benefit of their viewers/readers. They are intended for marketing purposes only and are of a general nature and do not constitute legal advice applicable to any particular facts or circumstances. Kidd Rapinet LLP and/or the author(s) accept no duty of care, responsibility or liability for any loss or damage which you or any third party may suffer as a result of any reliance or use by you or them of these marketing materials and content, except to the extent it is not legally possible to exclude such liability. If you require legal advice on your own situation, please contact us so we can discuss how we may assist.

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