Last updated: July 2026
by Jess Knauf, Director of Client Strategy at Mediate UK. Reviewed by Belinda Atkins, Managing Director, Family Legal Ltd. This page is written in accordance with our editorial standards. Information is current as of 23 July 2026.
Download the Latest C100 Form (PDF) 2026
Apply Online
Complete your C100 application online through the official government service.
You can apply directly through the government portal
Download PDF
Download the printable C100 form to complete by hand. This form was changed in June 2026.
Last updated: June 2026 | File size: ~350KB
Key Takeaways
- The current version of the C100 form is 06.26, issued in June 2026. Courts return applications made on older versions.
- You can download the printable PDF above, or apply through the GOV.UK online service instead.
- In most cases you must attend a MIAM before the court will accept the application, and your mediator signs Section 4 of the form.
- The court fee is £270 as of July 2026, and help with fees is available if you are on a low income.
- If you post the form, send at least three copies to your local Designated Family Centre.
C100 FORM
The C100 form is the official court application used in England and Wales to ask the family court to make a child arrangements order, a prohibited steps order, or a specific issue order. The current version is 06.26, issued in June 2026. It is made under Section 8 of the Children Act 1989, and in most cases you must attend a MIAM before you can submit it.
Which version of the C100 form do I need?
You need the June 2026 version (06.26), which is the file above. Courts reject applications made on out-of-date versions, so always check the version number in the footer of the form before you start filling anything in.
Before applying to court, you’re usually required to attend a MIAM (a Mediation Information and Assessment Meeting) unless you qualify for an exemption.
When do you need to use the C100 form?
You’ll need to complete a Form C100 if you’re applying to court for decisions about:
- Where your child should live (child arrangements order)
- When your child spends time with each parent
- Preventing someone from taking a specific action (prohibited steps order)
- Resolving a specific dispute about your child’s welfare (specific issue order)
- Parental responsibility matters
Most applicants must attend a MIAM before submitting this form to court. Our mediators can help you understand whether mediation could resolve your dispute without court proceedings. The new form emphasises that proceedings may be stopped at any point if the judge believes mediation would help in the process.
Jess Knauf
Director of Client Services | View Profile
“Many parents find that attending a MIAM opens up possibilities they hadn’t considered. Even if you’re certain court is the only option, mediation can help you reach agreements on some matters, reducing the scope and cost of court proceedings. We’re here to help you explore all your options before you take that formal step.”
How much does it cost to submit a C100 form?
The court fee is £270 as of July 2026. It rose from £263 on 13 July 2026 and applies to any application issued on or after that date. If you are on a low income or receive certain benefits, you may not have to pay it. Our guide to the EX160 fee remission form explains how to apply.
Legal aid for family mediation is means tested, so it depends on your income and capital rather than the type of dispute. Mediate UK is a Legal Aid Agency contracted provider, so your MIAM is free if you qualify. You can check in a couple of minutes with our legal aid eligibility checker.
How do you fill the form in once you’ve downloaded it?
The form runs to 16 sections and asks for detailed information about you, the other party, your children, and the orders you’re seeking. Section 4 is the part your mediator signs after your MIAM, and the court will not process the application without it.
Important: errors and blank sections are the most common reason applications are returned. If you’re unsure about any part of it, our Form C100 page-by-page guide takes you through the latest version, section by section, with screenshots of every page.
Do you need help with your C100 application?
For a neutral reference on the form itself, see the Family Court Wiki entry on Form C100.
Completing a C100 form is a significant step. Before you apply to court, we strongly recommend attending a MIAM to explore whether your issues can be resolved through mediation. This is not only a legal requirement in most cases, but it’s also often faster, less stressful, and more cost-effective than court proceedings.
Our experienced mediators can help you understand your options, complete your MIAM requirement, and provide the certificate you need for your court application.
You Might Also Find Helpful
| Form C100 page-by-page guideRead the guide | What happens at a MIAMFind out more |
| The 15 MIAM Exemptions ExplainedCheck the exemptions | The Ultimate Guide to Child ArrangementsView the guide |
Need Your MIAM Before You Apply?
The court will not process your C100 without a signed Section 4, unless a valid exemption applies. Book a MIAM to get started, or arrange a free call if you would like to talk things through first.
Our Legal Partnerships
Mediate UK works closely with trusted legal professionals to ensure your agreements are legally robust. Our partners include
DFA Law LLP (agreements managed by SRA-regulated solicitor Rachel Adams, SRA 452750),
independent barristers at St Ives Chambers (including Charmian Jackson, registered with the Bar Standards Board),
and The Family Law Consultant (managed by SRA-regulated solicitor Rhiannon Compton, SRA 600560).
These legal professionals support our clients with consent orders, independent advice, and final barrister reviews.