Applying for a C100 Form: Step-by-Step Guide

Step-by-step

1. Confirm the order you are asking forBe clear whether the issue concerns living arrangements, time with a child, a specific decision or stopping a proposed step.
2. Check whether you may applySome applicants may apply as of right; others need the court’s permission. Check the official guidance if you are unsure.
3. Deal with the MIAM requirementRecord the MIAM attended or the exemption relied on. Keep supporting evidence where the exemption requires it.
4. Gather accurate detailsCollect the full names, dates of birth and addresses requested for the children, applicant and respondent.
5. Describe the children’s circumstancesInclude current arrangements, relevant proceedings, other children and those with parental responsibility where the form asks.
6. State what you want the court to decideUse practical and specific wording. Explain the requested order and why it is said to support the children.
7. Explain the background factuallyUse dates and short paragraphs. Distinguish direct knowledge from information reported by someone else.
8. Complete safeguarding sections carefullyIdentify domestic abuse, harm, abduction or other risks accurately. Where required, complete the associated C1A information.
9. Check jurisdiction and confidentiality questionsRead each question, including any request to withhold contact details, before answering.
10. Review the whole applicationCheck names, dates, consistency, attachments and the statement of truth.
11. Submit and pay the applicable feeUse the official route and check the current court fee. Help with fees may be available to eligible applicants.
12. Prepare for what followsKeep a copy, note the case number, watch for court papers and start preparing for Cafcass safeguarding enquiries and the first hearing.

What you will need

• Names and dates of birth
• Current and proposed arrangements
• Existing orders and case numbers
• MIAM certificate or exemption evidence
• Brief chronology of relevant events
• Safeguarding details and C1A if required
• Current court fee or Help with Fees reference
• A copy of the completed application

Common mistakes to avoid

• Choosing an order without understanding what it does
• Using the form to attack the other party
• Leaving important safeguarding information vague
• Inconsistent names or dates
• Signing without a final accuracy check
• Sending the only copy of supporting information

Frequently asked questions

Official sources

• GOV.UK: Official C100 form and online application ↗
• HMCTS: Making an application — children and the family courts ↗
• GOV.UK: Get help with court fees ↗

Guidance checked: 1 November 2026. Always check the latest court order and official source before acting.