Paternity Cases in London: 7 Powerful Steps to Establish Legal Rights

Paternity cases in London usually start the same way: someone needs the law to confirm what they already believe, or to settle what they genuinely don’t know, about who a child’s father is. Maybe your name isn’t on the birth certificate and you’re being shut out of your child’s life. Maybe you’re a mother who needs paternity confirmed before pursuing child maintenance. Or maybe there’s a genuine dispute and a DNA test is the only way to move forward. Whatever brought you here, the process can feel confusing, especially since English family law separates two things people often assume are the same: being a biological father, and having parental responsibility in the eyes of the law.

This guide breaks down exactly how paternity is established in England and Wales, with a focus on how the process actually plays out through the Family Court in London. You’ll find the difference between voluntary and disputed paternity, how the C63 declaration of parentage application works, what happens when someone refuses a DNA test, and what legal rights follow once paternity is confirmed, from parental responsibility to child maintenance to inheritance.

None of this is a substitute for advice from a family solicitor on your specific case, but it will give you a clear, accurate roadmap so you know what to expect and what to ask when you do speak to one.

What “Paternity” Actually Means in Law

Before diving into the process, it helps to separate two ideas that get blended together constantly: biological paternity and legal parental responsibility.

Biological paternity is simply the factual question of who fathered a child. Legal parental responsibility is a separate, formal status defined by the Children Act 1989, and it’s what actually gives a father decision-making power over his child’s upbringing, including choices about education, healthcare, religion, and where the child lives.

You can be a biological father without holding parental responsibility. Conversely, in rare cases (such as adoption or certain assisted reproduction arrangements), someone can hold parental responsibility without being the biological parent. Untangling these two concepts is the first step in any paternity case in London.

Why This Distinction Matters

• A father without parental responsibility generally can’t make legal decisions about the child or automatically access school and medical records
• A father can still be required to pay child maintenance even without parental responsibility, since financial responsibility is tied to biological or legal parentage, not to parental responsibility itself
• Establishing parentage is often the necessary first step before a father can apply for parental responsibility, a Child Arrangements Order, or contact

When Do You Need to Establish Paternity?

Not every father needs to go through a formal legal process. Paternity is automatically presumed or easily recorded in several common situations:

• Married fathers: If you’re married to the child’s mother at the time of birth, you’re automatically presumed to be the legal father, and you automatically hold parental responsibility.
• Fathers named on the birth certificate: An unmarried father who is named on the birth certificate at registration (jointly with the mother) gains parental responsibility automatically, provided the birth was registered after 1 December 2003.
• Voluntary acknowledgment: If both parents agree on paternity, they can sign a Parental Responsibility Agreement without ever going near a courtroom.

A formal declaration of parentage becomes necessary when one of these situations doesn’t apply, most often because:

• The mother refuses to name the father on the birth certificate
• The alleged father isn’t sure he’s the biological parent and wants confirmation
• Another party disputes who the father is, sometimes years after the child’s birth
• A father needs legal proof of parentage for inheritance, nationality, or immigration purposes
• The Child Maintenance Service requires confirmation of parentage before it can assess payments

The Legal Framework Behind Paternity Cases in London

Two pieces of legislation govern how paternity cases are resolved in the Family Court:

The Family Law Act 1986

Section 55A of this Act allows a person with a genuine interest, typically the mother, the alleged father, or the child (once an adult), to apply to the Family Court for a declaration of parentage. This can be sought at any point in a person’s life, including after death, provided there’s a sufficient personal connection to England and Wales.

The Family Law Reform Act 1969

Section 20 of this Act gives the court the power to direct scientific (DNA) testing to determine parentage during proceedings. It’s the legal basis courts rely on when ordering DNA tests in disputed cases.

How to Apply for a Declaration of Parentage: Step by Step

If your case can’t be resolved through a birth certificate correction or a mutual agreement, here’s how the formal process unfolds through the Family Court.

Step 1: Complete Form C63

The application for a declaration of parentage is made using Form C63, filed under Section 55A of the Family Law Act 1986. The form requires details about the child, the mother, and anyone alleged to be the father, along with a brief written summary of why the application is being made. It’s a lengthy form, and how you frame your summary can shape how the case is handled from the outset.

Step 2: Pay the Court Fee

As of the most recent fee schedule, the standard court fee for a declaration of parentage application is £365. If you’re on a low income or receiving certain benefits, you may be able to apply for a fee exemption or reduction using Form EX160.

Step 3: File With the Family Court

In London, applications are typically filed with the Central Family Court, which handles the majority of family law matters for the capital, though certain cases may be allocated to a local family court depending on where the child or parties live. Once filed, the court will list the matter for a first hearing and notify all named respondents.

Step 4: Attend the First Hearing

At an initial hearing, the judge will consider the application, hear from both sides, and decide whether DNA testing is necessary or whether the matter can be resolved on the existing evidence. If both parties are cooperative, this stage can move relatively quickly.

Step 5: DNA Testing, If Ordered

If paternity is disputed, the court will typically direct that a scientific test take place under Section 20 of the Family Law Reform Act 1969. A few important rules apply here:

• Testing must be carried out by a laboratory accredited by the Ministry of Justice for the results to be admissible in court
• For a child under 16, someone holding parental responsibility must consent to the test on the child’s behalf
• The report goes back to the court and states whether a party is excluded, or not excluded, from being the biological parent

Step 6: What Happens If Someone Refuses the Test

The court cannot physically force an adult to provide a DNA sample. However, if a party refuses without good reason, the judge can draw an adverse inference from that refusal, effectively treating the refusal as evidence against that person’s position. In practice, this means refusing a test rarely helps a respondent’s case and often backfires.

Step 7: The Court’s Decision

Parentage is determined on the balance of probabilities, the standard civil burden of proof, meaning the court decides what’s more likely than not to be true. Where DNA evidence is available, it’s treated as close to conclusive. Where it isn’t available or a test wasn’t possible, the judge will weigh other evidence, such as timing of the relationship, other witness testimony, and any documentary evidence.

A declaration of parentage cannot be granted simply because both parties agree or by default; a judge has to be satisfied on the evidence before making the order.

What Happens After Paternity Is Established

Once the court issues a declaration of parentage, or paternity is otherwise confirmed, several legal consequences follow.

Parental Responsibility

Establishing biological parentage doesn’t automatically grant parental responsibility. A father confirmed through a declaration of parentage may still need to apply separately for a Parental Responsibility Order, or reach an agreement with the mother, to gain the legal authority to make decisions in the child’s life.

Child Maintenance

Once parentage is confirmed, the Child Maintenance Service (CMS) can assess and enforce financial support obligations based on the paying parent’s income. Confirmed paternity is often the missing piece that allows a maintenance case to proceed when it was previously stalled by a dispute over who the father actually is.

Contact and Child Arrangements

A confirmed father can apply to the court for a Child Arrangements Order, covering where the child lives and how much time they spend with each parent, if this hasn’t already been agreed informally.

Inheritance and Nationality

Legal parentage affects a child’s rights to inherit under intestacy rules and, in some cases, their claim to citizenship or nationality through a parent. This is one of the less obvious but genuinely significant reasons people pursue a formal declaration years after a child’s birth.

Correcting the Birth Certificate

Once paternity is confirmed by the court, the birth certificate can, in most cases, be amended to reflect the correct legal father, which then flows through to related records and rights.

Common Challenges in Paternity Cases

Every case is different, but a few issues come up repeatedly in London family courts.

• Uncooperative parties: One parent refusing to engage, respond to the application, or attend hearings can slow the process significantly, though the court can still proceed and make findings in their absence.
• Historic cases: Applications made years after a child’s birth, sometimes when the child is already an adult, can involve locating and serving parties who are difficult to trace.
• Emotional complexity: These cases often intersect with painful family histories. Courts are generally sensitive to this, but it doesn’t remove the practical burden on the people involved.
• Cost: Beyond the £365 court fee, DNA testing typically costs between £200 and £500, and legal representation adds further cost if the case becomes contested.

Should You Use a Solicitor?

You’re not required to have legal representation to file a C63 application, but there are situations where instructing a family law solicitor makes a meaningful difference:

• The other party is actively disputing paternity or refusing to cooperate
• There are competing paternity claims involving more than one alleged father
• The case involves cross-border elements, such as one party living outside England and Wales
• You’re also seeking parental responsibility or a Child Arrangements Order alongside the declaration
• You need help gathering and presenting supporting evidence beyond DNA testing

Many London-based family law firms offer an initial consultation specifically to assess whether your situation needs a declaration of parentage at all, or whether a simpler route, like a Parental Responsibility Agreement, will get you where you need to be faster and more cheaply.

Where to Find Official Guidance

For the official C63 application form and current court fee information, the UK Government’s court and tribunal forms page is the authoritative source. For the underlying law on parental responsibility and a father’s legal standing, the Children Act 1989 on legislation.gov.uk sets out exactly what parental responsibility covers under Section 3.

Conclusion

Paternity cases in London hinge on a process that’s more structured than most people expect: an application under Section 55A of the Family Law Act 1986, filed on Form C63, potentially followed by a court-directed DNA test under the Family Law Reform Act 1969, and ultimately a decision made on the balance of probabilities. Getting a declaration of parentage is often just the first domino though, since parental responsibility, child maintenance, contact arrangements, and inheritance rights typically depend on that initial legal finding. If you’re facing a disputed or uncertain paternity situation, understanding this sequence, and knowing when a DNA test, a court hearing, or a solicitor’s help is genuinely necessary, puts you in a far stronger position to protect your rights and your relationship with your child.