Application to Vary Child Arrangements Order
- Details
- Written by: Khalid Khokhar
An application to vary a Child Arrangements Order (CAO) becomes necessary where an existing order no longer reflects a child's needs or a parent's circumstances. When those changes make the original order difficult or unfair to follow, you may need to apply to the Family Court to formally vary (change) it. The court's guiding principle remains the same: the child's welfare comes first.
To apply to vary a Child Arrangements Order, complete and submit Form C100 to the Family Court, choosing the option to vary or discharge the order. The standard court fee is £255, with possible fee exemptions.
At Wembley Solicitors, we understand that behind every court order is a child whose routine, stability and wellbeing matter more than anything else. If your current Child Arrangements Order is no longer workable, we provide clear, practical legal advice to help you move forward with confidence.
Contact Wembley Solicitors at 020 3417 3700 to discuss your Child Arrangements Order and see how we can guide you safely through the variation process.
Table of Contents
- What Is an Application to Vary Child Arrangements Order?
- When Should You Apply to Vary a Child Arrangements Order?
- What Are the Most Common Reasons to Vary a Child Arrangements Order in the UK?
- How to Apply to Vary a Child Arrangements Order?
- How to Proceed with a Variation Application?
- What Happens After You Apply?
- How Long Does an Application to Vary Child Arrangements Order Take?
- How Much Does It Cost to Vary a Child Arrangements Order?
- Evidence Needed for a Child Arrangements Order Variation Application
- Can You Vary a CAO by Agreement?
- What You Cannot Do
- Can We Change a Child Arrangement Order Without Going to Court?
- Why Legal Advice Matters in Child Arrangements Cases?
- Why Choose Wembley Solicitors?
- Speak to a Family Law Solicitor Today
What Is an Application to Vary Child Arrangements Order?
An application to vary a Child Arrangements Order (CAO) is a UK legal process to change an existing order about where a child lives or spends time. It is used when significant changes, like relocation, work schedules, or welfare concerns, make the original order impractical or not in the child's best interests.
A Child Arrangements Order (CAO) sets out where a child lives, their contact with each parent, and how arrangements are managed. Made under the Children Act 1989, these orders are legally binding. An application to vary a CAO asks the Family Court to change the order when circumstances change, with the court approving only if the variation is in the child's best interests.
When Should You Apply to Vary a Child Arrangements Order?
A variation application should not be made lightly. The court will not entertain changes simply because one parent is dissatisfied with the outcome of the previous case. Instead, there must be a genuine and meaningful change in circumstances.
Examples of valid reasons include:
- A child has grown older, and their needs or wishes have changed
- One parent is relocating a significant distance
- A change in work schedule makes the current arrangement impractical
- Safeguarding concerns have emerged
- The child's education or health needs require a different structure
If communication between parents has broken down and an informal agreement is impossible, applying to vary the order may be the only structured route forward.
At Wembley Solicitors, we will assess whether your circumstances meet the legal threshold before advising you to proceed.
What Are the Most Common Reasons to Vary a Child Arrangements Order in the UK?
A Child Arrangements Order may need to be varied when the original arrangements no longer work for the child's welfare or safety. Common reasons include:
- Significant Change in Circumstances: For example, a parent relocating or a major change in living arrangements.
- Safety and Welfare Concerns: Risks such as abuse, neglect, or unsafe conditions during contact.
- Changing Needs of the Child: Adjustments for education, health, or emotional development as the child grows.
- Child's Wishes: Older children expressing preferences about where they live or how much time they spend with a parent.
- Practicality and Compliance: Original orders are becoming difficult to follow due to work schedules or logistics.
- Non-Compliance or Breach: One parent consistently not following the existing order.
- Health Issues – Physical or mental health changes affecting a parent's ability to care for the child.
- Breakdown in Relationship: Deteriorating parent-child relationship or high conflict between parents.
In all cases, the court prioritises the child's best interests, and any variation must be justified as supporting the child's welfare.
How to Apply to Vary a Child Arrangements Order?
To apply, you must complete and submit Form C100 to the Family Court, clearly selecting the option that you are seeking to vary or discharge an existing Child Arrangements Order. The current court fee is £255, unless you qualify for fee remission.
Before submitting your application, you will usually need to attend a Mediation Information and Assessment Meeting (MIAM). The court expects parents to explore mediation first, unless an exemption applies (for example, in cases involving domestic abuse or urgent safeguarding concerns).
Once your application is issued, the court will list the case for a hearing. In many cases, the court will ask CAFCASS to prepare a safeguarding letter or report to assist the judge in understanding the child's circumstances. This may involve speaking with both parents and, depending on age and maturity, the child.
How to Proceed with a Variation Application?
When you need to change an existing Child Arrangements Order, the process involves several key steps designed to ensure the child's welfare is prioritised at every stage.
1. Attending a MIAM
Before filing a variation application, most parents must attend a Mediation Information and Assessment Meeting (MIAM). This meeting helps parents explore whether they can agree on changes without going to court. Some situations, like domestic abuse or urgent safeguarding concerns, may exempt you from this requirement.
2. Filing Form C100
To formally begin the process, you must complete and submit Form C100 to the Family Court, selecting the option to vary or discharge the existing order. The standard court fee is £255, though fee exemptions may apply depending on your financial circumstances.
3. CAFCASS Safeguarding Checks
Once the application is filed, the court usually requests input from CAFCASS (Children and Family Court Advisory and Support Service). CAFCASS may speak with both parents and review any welfare or safeguarding concerns to help the court make an informed decision.
4. First Hearing (FHDRA)
You will attend a First Hearing Dispute Resolution Appointment (FHDRA). At this initial hearing, the judge will assess whether parents can reach an agreement or whether additional evidence or reports are needed before making a decision.
5. Final Hearing (If Necessary)
If no agreement is reached, the case may proceed to a final hearing, where the court decides whether to vary the Child Arrangements Order.
Throughout the process, the judge applies the welfare checklist under the Children Act 1989, focusing on what arrangement best supports the child's safety, stability, and well-being.
What Happens After You Apply?
Once the application is filed:
- The court will schedule a First Hearing Dispute Resolution Appointment (FHDRA).
- Safeguarding checks will be completed.
- The judge may encourage negotiation or direct further evidence.
- In more complex cases, a full hearing may take place.
If required, CAFCASS may prepare a more detailed Section 7 report to assist the court. Ultimately, the judge will decide whether varying the Child Arrangements Order serves the child's best interests.
How Long Does an Application to Vary Child Arrangements Order Take?
An application to vary a Child Arrangements Order usually takes 6 to 12 months to reach a final decision. While the first hearing is typically scheduled within 6 to 8 weeks, involvement of CAFCASS and court availability often extends the overall timeline.
Early legal advice and well-prepared evidence can significantly reduce delays.
How Much Does It Cost to Vary a Child Arrangements Order?
The court fee for the application to vary a Child Arrangements Order is currently £255, although you may qualify for help with fees depending on your financial situation.
Legal fees vary depending on the complexity of the case and whether the matter settles early or proceeds to a final hearing.
At Wembley Solicitors, we provide transparent advice on costs from the outset so you can make informed decisions.
Evidence Needed for a Child Arrangements Order Variation Application
To successfully vary a Child Arrangements Order (CAO), you must show a significant change in circumstances and that the proposed change is in the child's best interests. Evidence can include school or medical records, relocation or work schedule changes, safeguarding reports, and communication records. The court focuses on the child's stability, safety, and emotional welfare, not parental convenience.
Can You Vary a CAO by Agreement?
Yes. If both parents agree on changes, a Consent Order can be drafted and submitted to the court for approval.
This route is:
- Faster
- Less stressful
- More cost-effective
- Less adversarial
Even where agreement exists, formalising it through a court-approved Consent Order provides legal certainty and prevents future disputes.
Our family law solicitors regularly draft and submit Consent Orders on behalf of clients across London.
What You Cannot Do
It is important to understand that an application to vary a Child Arrangements Order (CAO) is not an appeal.
If you believe the judge made a legal error in the original case, the correct route is to appeal, which has strict time limits and legal grounds. A variation application cannot be used simply to revisit arguments you previously made.
We provide honest advice. If your situation does not justify a variation, we will tell you.
Can We Change a Child Arrangement Order Without Going to Court?
Yes. If both parents agree, you can apply for a Consent Order reflecting the new arrangements.
This is usually faster and less stressful than contested proceedings. However, informal agreements without court approval are not legally binding and can lead to disputes later.
Many parents in Wembley choose to formalise agreed changes to avoid future uncertainty.
Why Legal Advice Matters in Child Arrangements Cases?
While it is possible to apply without legal representation, varying a Child Arrangements Order involves procedural requirements, evidence preparation, and often emotionally sensitive issues. A family law solicitor can:
- Assess the strength of your case
- Help you prepare supporting evidence
- Represent you at hearings
- Advise on negotiation or mediation
- Ensure compliance with court rules
Because the court's primary concern is the child's welfare, not parental convenience, professional guidance can make a significant difference in presenting your case clearly and effectively.
Why Choose Wembley Solicitors?
Child arrangement disputes are rarely just legal problems. They involve emotion, uncertainty and often long-standing tension between parents.
At Wembley Solicitors, we offer:
- Clear and practical advice from experienced family law solicitors
- Strategic preparation of your variation application
- Representation at court hearings
- Sensitive handling of safeguarding issues
- Strong negotiation support where agreement is possible
We focus on constructive outcomes wherever possible, but we are fully prepared to advocate firmly where necessary.
Our approach is straightforward: protect the child's welfare while protecting your legal position.
Speak to a Family Law Solicitor Today
If your current child arrangements are no longer workable, seeking early legal advice can prevent matters from escalating.
An application to vary a Child Arrangements Order (CAO) must be approached carefully, with clear evidence and a strong understanding of the law. The court's priority will always be the child's welfare, and your case must be prepared with that principle at its centre.
Need to change a Child Arrangements Order? Speak to our specialist family law solicitors at 020 3417 3700 for clear, practical advice. We are here to guide you through the process with clarity, care and firm legal expertise.
There are several ways to contact Wembley Solicitors:
- Phone - Call us on 020 3417 3700
- Email us - info@wembleysolicitors.com
- Online - Fill in our online enquiry form
- Live Chat - Click on the chat button below
- Visit our office - 561 High Rd, Wembley, HA0 2DW
Our team of immigration solicitors is based in Wembley, London, about a 4-minute walk from the Wembley Central underground station, which gives easy access to clients.
Legal Disclaimer
The information provided is for general informational purposes only and should not be taken as legal advice. While we make every effort to ensure accuracy, the law may change, and the information may not reflect the most current legal developments. No warranty is given regarding the accuracy or completeness of the information, and we do not accept liability in such cases. We recommend consulting with a qualified lawyer at Wembley Solicitors before making any decisions based on the information provided on this website.

