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Yes! You can use AI to fill out Form C8, Confidential contact details

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Form C8, Confidential contact details, page 1
Basic · 34/100Form Complexity Index

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What this form asks for

The AI fills all of it, from your answers or your documents.

Form C8, Confidential contact details, is a crucial document used in UK family court proceedings to formally request that your personal contact information be kept confidential from other parties involved in the case. It is essential for individuals who believe revealing their details could pose a risk to themselves or their children, ensuring this sensitive information is only accessible to the court and Cafcass. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.
Fillable fields19
Pages2
Sections11
Questions that depend on earlier answers2
Form Complexity IndexBasic, 34/100

The AI checks your answers before you download

14 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Ensures Case Number is Provided

This check verifies that the 'Case number' field is not empty. The case number is a critical identifier that links this confidential document to the correct legal proceedings in the court system. Failure to provide it would make it impossible for court staff to file the form correctly, potentially compromising the confidentiality it's meant to protect.

Validates Omitted Contact Details are Listed

This validation ensures that the 'Omitted contact details' text area is not left blank. The entire purpose of Form C8 is to list specific contact details that must be kept confidential from other parties. An empty submission serves no purpose and indicates a misunderstanding or error by the user, so the form should be rejected as incomplete.

Mandatory Selection for Refuge Status

This check confirms that the user has selected either 'Yes' or 'No' for the question 'Are you currently resident in a refuge?'. This information is mandatory for the court and support services to understand the applicant's current safety and housing situation. An unselected status leaves a critical piece of information ambiguous.

Exclusive Selection for Statement of Truth

This validation ensures that exactly one of the three 'Statement of truth' checkboxes is selected. The statement of truth is a formal legal declaration, and selecting none, or more than one, creates ambiguity about the basis on which the form is being submitted. The form is legally invalid without a single, clear declaration.

Exclusive Selection for Signer's Role

This check verifies that either 'Applicant/Respondent' or 'Applicant’s/Respondent’s legal representative' is selected, but not both. This selection clarifies the capacity in which the person is signing the document, which is a fundamental requirement for its legal validity. Failure to make a single, clear choice makes the signature's authority unclear.

Validates Date of Signature is Complete and Real

This validation ensures that the 'Day', 'Month', and 'Year' fields are all filled in and constitute a valid calendar date (e.g., not 31 April). The date of signature is legally significant as it records when the statement of truth was made. An incomplete or impossible date can render the document invalid and inadmissible.

And 8 more checks
  • Prohibits Future Dates for Signature
  • Ensures Signer's Full Name is Provided
  • Conditional Requirement for Legal Representative's Firm Name
  • Conditional Requirement for Position Held
  • Logical Consistency between Signer Role and Statement of Truth
  • Ensures Applicant's Full Name is Provided
  • Ensures Child's Full Name is Provided
  • Ensures Court Name is Provided

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How to Fill Out C8 Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select Form C8, Confidential contact details.
  2. Use the AI assistant to accurately fill in the court name and the specific case number for your proceedings.
  3. Enter the full legal names of the child or children involved, as well as your own full name.
  4. Carefully list all the contact details you wish to keep private, such as your address, phone number, and email, ensuring this information is not already known to the other parties.
  5. Indicate whether you are currently residing in a refuge by checking the 'Yes' or 'No' box.
  6. Complete the 'Statement of truth' section by selecting the correct declaration, providing your signature, and entering the date.
  7. Review all the information for accuracy, then download the completed form, remembering to keep it separate from all other court documents to maintain confidentiality.

Common Mistakes in Completing C8

The ones the AI is built to catch.

Accidental Disclosure on Other Court Forms
This is the most critical mistake. A person correctly fills out Form C8 to keep their address private but then includes that same address on the main application (e.g., Form C100) or a financial statement. This action completely negates the protection of Form C8, as the sensitive information is then served to the other party. To avoid this, you must meticulously review every single document you submit to the court to ensure it does not contain any details listed on your C8.
Incomplete or Incorrect Case Number
Entering the case number with typos, or omitting parts of it, is a frequent data entry error. This often happens when copying the number from another document. An incorrect case number can lead to the C8 form being rejected or not linked to your case file, meaning your confidential details are not protected as intended. Always double-check the case number against official correspondence from the court before submitting.
Attaching Form C8 to Other Documents
The form explicitly states, "Do not attach this document to any other form." Despite this clear instruction, users sometimes staple or clip it to their main application, assuming it's part of a single submission package. This risks the confidential form being mishandled and accidentally served to the other parties, defeating its entire purpose. Form C8 must always be filed separately with the court clerk.
Listing Information Already Known to the Other Party
The form's instructions specify to only list contact details that you believe the other parties do not already know. A common error is to list a previous address or old phone number that the other person is aware of. This is unnecessary and clutters the form, distracting from the truly confidential information that needs protection. Focus only on new, private details the other party could not know.
Incorrectly Completing the Statement of Truth
The Statement of Truth has multiple, similar-looking checkboxes, and people often select the wrong one, for example, an individual applicant ticking the box meant for a legal representative. This can invalidate the statement and the form itself, leading to rejection by the court. Carefully read each option and select only the one that accurately describes who is signing the form (e.g., "I believe..." for a self-representing party).
Forgetting to Sign or Date the Form
It is surprisingly common for filers to complete all the details but forget to sign and date the form in the Statement of Truth section. An unsigned form is not legally valid and will be rejected by the court, causing significant delays in processing your request for confidentiality. Always perform a final check to ensure the signature and date fields are completed correctly before submission.
Using Informal or Incomplete Names
Applicants often use nicknames, shortened names, or omit middle names for themselves or their children. Court documents require full legal names for accurate identification and to ensure consistency across all case filings. Using an incorrect name can cause administrative delays and confusion when matching this form to the main case file. Always use the full legal names as they appear on birth certificates or other official documents.
Failing to Redact Third-Party Documents
The form warns that you are responsible for information on all documents you submit, even those from third parties like medical reports or bank statements. A common mistake is submitting a report that contains your confidential address, not realizing it needs to be redacted (blacked out) first. This accidental disclosure can put you at risk. Before submitting any third-party document, you must carefully review and redact any confidential information listed on your C8.
Vague Description of Confidential Details
In the "Omitted contact details" section, a user might simply write "my address and phone" without providing the specific information. The court and Cafcass need the exact details to be able to contact you, even while keeping them confidential from others. Failing to provide the full, specific address, phone number, or email address makes the form ineffective. You must list the complete and precise details you wish to protect.
Confusion Between Applicant and Legal Representative Fields
The signature section has separate fields for the applicant/respondent and their legal representative (firm name, position). Self-representing individuals sometimes mistakenly fill in the fields meant for a solicitor. This creates confusion and can cause the form to be questioned or returned for correction. AI-powered form filling tools like Instafill.ai can help prevent this by showing or hiding conditional fields based on your answers, ensuring you only complete what's necessary.
Entering an Incorrect Court Name
Users may enter a generic or abbreviated name for the court, such as "Family Court," without specifying the location (e.g., "Central Family Court" or "Family Court at Manchester"). This ambiguity can cause the document to be misrouted or delayed in reaching the correct administrative office. Always use the full, official name of the court hearing your case as it appears on other legal papers. If the form is a non-fillable PDF, a tool like Instafill.ai can convert it to a fillable version, making data entry clearer.

Frequently Asked Questions About C8

 

Is it really free for 7 days?
Yes. You pay $0 today. Cancel before Nov 5 and you are never charged. Keep it, and it is $19.99 a month for 5 fills of your C8.
Can I fill other forms too?
This plan is for your C8: your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
How do I cancel?
From your account, in two clicks, any time. No email, no call.
How does the AI fill out C8?
You answer a few questions in plain words, or upload a document you already have. The AI reads what you give it and puts each answer into the right field of C8, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
How complex is C8 to fill out?
C8 has a Form Complexity Index of 34 out of 100, in the basic tier: 19 fillable fields across 2 pages. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the purpose of Form C8?
Form C8 is used in family court proceedings to keep your contact details confidential from other people in the case. This is important if you believe revealing your address, phone number, or email could pose a risk to you or your children.
Who needs to fill out Form C8?
Anyone involved in a family court case who wishes to keep their personal contact information private from the other parties should complete this form. It ensures your details are on file for the court but not shared with others in the proceedings.
What information do I need to provide on Form C8?
You will need to provide the court and case number, the full name(s) of the child(ren), your full name, and the specific contact details you wish to keep confidential. You must also sign a statement of truth.
How should I submit Form C8 to the court?
You must file Form C8 as a separate document. Do not attach it to any other form to ensure it is handled confidentially by court staff.
Who will have access to the confidential details I list on this form?
The contact details you provide on Form C8 will only be used by the court and the Children and Family Court Advisory and Support Service (Cafcass) or CAFCASS Cymru. They will not be revealed to anyone else without a specific court order.
What should I do if the other party already knows my old address but not my new one?
In the 'Omitted contact details' section, you should only list the information that you believe the other people in the case do not already know. Do not include details that are already known to them.
What is my responsibility after submitting Form C8?
You must ensure that any other forms or documents you submit to the court do not contain the information you wish to keep private. Court staff are not able to check your documents for accidental disclosures.
What is the 'Statement of Truth' section?
This is a declaration confirming that the information you have provided is true to the best of your belief. Knowingly providing false information in a document verified by a statement of truth can lead to proceedings for contempt of court.
Where do I find the case number for this form?
The case number is the official reference number assigned to your family court proceedings. It can be found on any official documents or correspondence you have received from the court regarding your case.
I am currently living in a refuge. Should I mention this?
Yes, the form includes a specific question asking if you are currently a resident in a refuge. You should check the 'Yes' box if this is your situation.
Can AI tools help me fill out Form C8?
Yes, services like Instafill.ai use AI to accurately auto-fill form fields, which can save you time and help prevent errors when completing the form.
How can I fill out Form C8 online?
You can use a service like Instafill.ai to complete your form online. Simply upload the C8 form, and the platform will provide an interactive version for you to fill out and download.
The PDF of Form C8 I downloaded is not fillable. What can I do?
If you have a non-fillable or 'flat' PDF, you can use a tool like Instafill.ai. It can convert the document into an interactive, fillable form that you can easily complete on your computer.
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