C100 child arrangements application

What C100 is used for

The C100 publication covers applications for child arrangements, prohibited steps or specific issue orders under the Children Act 1989, and applications to vary or discharge an order. Its official page also links to the online application service.

Prepare before you start

• Details of the children and the people involved.
• Existing orders and proceedings relevant to the application.
• The MIAM information or exemption evidence requested by the form.
• Information about urgent issues, safety and confidential contact details, using the official instructions.

Which fee applies?

Check the Children Act application entry in the family EX50 schedule. Help with Fees may be available separately. A mediation voucher does not pay the court application fee.

Check the next step

Check the MIAM requirement and any applicable exemption with the official guidance. Do not publish confidential details in a public enquiry form. Urgent cases and safeguarding concerns need appropriate professional help.