A C100 is the court application form used in England and Wales to make an application to the family court to make a Child Arrangements Order, Prohibited Steps Order or Specific Issue Order under the Children Act 1989.
The form is most often used when parents or carers can’t agree on arrangements for a child and want the court to make a decision.
Most people will need to go to a Mediation Information and Assessment Meeting (MIAM) before they apply for a C100, unless they are exempt (such as if there is domestic abuse, urgency or safeguarding concerns).
1. What is a C100 form?
The C100 is the official application you use to apply to the family court to resolve disputes relating to arrangements for children. This might be where a child lives, or the time they spend with each parent.
2. When do I need to use a C100 form?
You need a C100 if you’re asking the court for:
- A Child Arrangements Order (e.g., where the child lives/time with each parent)
- A Prohibited Steps Order (preventing a parent doing something)
- A Specific Issue Order (deciding a particular matter such as schooling or medical care)
3. Do I need to attend a MIAM before filing a C100?
Yes, in most cases. You must attend a MIAM unless you qualify for an exemption, for example domestic abuse, urgency, previous involvement of social services, or the other party is uncontactable.
4. How do I fill out the C100 form?
You must provide details of the child, the nature of the dispute, any safeguarding concerns, what you have done to resolve the issue (including whether you have tried mediation) and the court order you are asking for. A professional can ensure that the form is completed correctly.
5. How much does it cost to file a C100?
There is a court fee to submit the C100. Applicants who are eligible for help with fees may pay a reduced amount or nothing.
6. What happens after I submit a C100 form?
Cafcass (the Children and Family Court Advisory and Support Service) will undertake safeguarding checks and will usually talk to both parents. The court will then arrange a first hearing to investigate whether an agreement can be reached and to consider further steps.
7. Can I apply online instead of using the C100 paper form?
Yes. Many applicants now use the online Family Court service, though the C100 paper form remains valid.
8. Can the respondent object to my C100 application?
The respondent can present evidence, make safeguarding concerns, or disagree with the proposals, but the court will decide what they think is in the child’s best interests.
9. Do I need a solicitor to submit a C100?
No, but it is strongly advised that you seek legal advice – in particular, if it is a high-conflict case, if there are allegations of harm or abuse, or if there are complex legal issues.