Donor Agreement UK: Why It Is Not a Binding Contract
A donor agreement in the UK is not legally binding. It cannot decide who the child’s legal parents are, it cannot stop a claim for child maintenance, and it does not oblige a family court to follow it. What it does is record what everyone intended at the time, which courts can take into account.
That gap between what people expect a signed document to do and what it actually does is where most known donation trouble starts in this country. Templates circulate in groups and on donor sites with headings that read like a commercial contract, and the people signing them reasonably assume that signing settles something. This article sets out what the document cannot do and why, what it is useful for, what UK courts have done with donor arrangements, and which pieces of paper in the UK do carry legal effect. One thing belongs at the top. sperm-donation.com is a matching platform, and that is the entire product. We do not handle, store, test or ship anything biological, we are not a clinic or a sperm bank, we do not verify identity or health, and we do not give legal or medical advice. The checks, and the decisions, stay with you.
Is a donor agreement legally binding in the UK?
No. The Human Fertilisation and Embryology Authority, the UK regulator, states in its guidance for sperm donors that donor and co-parenting agreements are “not legally binding” and do not guarantee anyone’s role in the child’s life or their legal and financial responsibilities. That page was last reviewed in May 2026.
The fertility law firm NGA Law puts the same rule in terms of consequences. Pre-conception agreements do not govern who the child’s legal parents are, and if there is a dispute later, the family court is not obliged to follow what the agreement says where the court thinks something else is in the child’s best interests.
This holds whatever the document looks like. A four page agreement produced by a solicitor and a paragraph typed into a message thread occupy the same legal category in the UK: both are evidence of what people said they wanted, and neither is enforceable as a contract about a child.
What can a donor agreement not do?
It cannot do the three things people most often sign it for.
It cannot create or remove legal parenthood. Who counts as the child’s legal parent is set by the Human Fertilisation and Embryology Act 2008 and depends on whether the insemination happened inside a licensed clinic and whether the birth mother was married or in a civil partnership at the time. Our guide to who counts as the legal parent in UK known donation works through those rules. An agreement sits outside that framework entirely.
It cannot bind a family court. Where adults disagree later about contact, parental responsibility or where a child lives, the court decides under the Children Act 1989, and section 1(1) makes the child’s welfare its paramount consideration. A court that considered itself bound by an adults’ agreement would be applying the wrong test.
It cannot waive child maintenance. The HFEA states the point bluntly to donors: “You cannot opt out of being the legal father”, even where the mother agrees to it. Maintenance liability follows legal fatherhood, and a written waiver removes neither.
Why does UK law take this out of the parties’ hands?
Both questions the agreement tries to settle sit outside the control of the people signing it. Legal parenthood is a status allocated by statute in a defined set of circumstances, and statuses of that kind are generally not something private parties can trade. Arrangements for a child are decided on that child’s welfare, and the child was never a party to the agreement.
There is a practical reason as well as a doctrinal one. Everyone involved is deciding, before conception, how they will feel about a person who does not yet exist, and treating that document as final would lock a child into an arrangement designed by adults who had not yet met the child.
Does a solicitor, a witness or a notary make it binding?
No, and this is the most expensive misunderstanding in the area. NGA Law notes that there are no fixed requirements for formalising a pre-conception agreement, and that it does not need to be witnessed by a solicitor. The firm also notes that an agreement is likely to carry more weight in court if it is legally accurate and if the parties had legal advice before signing.
Those two statements sit together comfortably. Legal input changes how much weight a court gives the document as evidence, and it does not change its status. Signing in front of witnesses, having it notarised, paying for a template on a donor website, or adding clauses about governing law will not turn an agreement about a child into an enforceable contract in the UK. The practical value of an hour with a family solicitor is that the resulting document describes the legal position correctly, so neither person is later relying on a clause that was wrong from the moment it was typed.
What is a donor agreement actually useful for?
It has three real uses, none of which is enforcement.
The first is evidence. NGA Law describes pre-conception agreements as providing clear evidence of what people intended at the outset, which may carry weight if there is a dispute. A written record also removes an argument that features in many contested cases, namely what was agreed at all.
The second is prevention. Most known donor disputes come from mismatched expectations rather than bad faith, and a written agreement forces the mismatch to surface while everyone can still walk away.
The third is that writing it makes people ask specific questions instead of general ones. “Are you happy with limited involvement” produces agreement from almost anyone, while “how many times a year would you want to see the child at age six” produces information.
Our guide to a first meeting with a known donor covers the conversation itself, and the questions there are the ones worth answering on paper afterwards.
What have UK courts done with donor arrangements?
The reported cases are the most useful thing to read, because they show how variable the outcomes are. NGA Law describes the case law in known donation disputes as enormously variable, with a great deal depending on the particular facts.
In Re D (Lesbian Mothers and Known Father) [2006] EWHC 2 (Fam), a known donor to a female same sex couple was given parental responsibility on a restricted basis, so that his status was acknowledged while the couple’s family unit was protected from interference. In Re B (Role of Biological Father) [2007] EWHC 1952 (Fam), a donor to a female same sex couple who applied for a larger role was refused parental responsibility and given identity contact four times a year.
In A v B and C [2012] EWCA Civ 285, the Court of Appeal allowed a biological father regular contact with his son although he had agreed at the outset with the child’s same sex mothers that he would have no involvement. The court rejected the idea of ranking primary and secondary parents and restated that the child’s welfare is the only governing principle.
In Re G and Re Z [2013] EWHC 134 (Fam), two known donors who were not the legal fathers, because both mothers were civil partners and joint legal parents, were granted permission to apply for contact. The contact they had already had in the children’s early months gave them sufficient connection. In Re X (No. 2) [2015] EWFC 84, a biological father in a similar position was also granted permission, and the court then decided that limited and indirect contact was in the child’s best interests.
Read together, these say something more precise than “agreements are ignored”. Courts look at the agreement, then at what actually happened afterwards, and the second usually matters more. A donor who was given regular contact for two years has a connection with the child that no clause removes.
Can a known donor still apply to court if he is not a legal parent?
Yes, with the court’s permission first. A person who is not a parent has no automatic right to bring a section 8 application under the Children Act 1989 and must apply for leave. Section 10(9) tells the court what to weigh: the nature of the proposed application, the applicant’s connection with the child, any risk of the application disrupting the child’s life so much that the child would be harmed, and, where a local authority is looking after the child, the authority’s plans and the parents’ wishes.
Nothing in that list is an agreement. A pattern of contact is a connection, which is why Re G and Re Z and Re X (No. 2) both turned on the months after birth rather than the document before conception.
Can an agreement prevent a child maintenance claim?
No. NGA Law states that whether a known donor is financially responsible depends solely on whether he is the child’s legal father, that no account is taken of any agreement, and that it is irrelevant whether the donor has had any involvement with the child.
Where the donor is the legal father, an application can be made to the Child Maintenance Service for regular child support, and to the family court under Schedule 1 of the Children Act 1989 for top up maintenance or a capital award. The CMS works out a weekly figure from the paying parent’s gross income as reported to HMRC, and it does not read donor agreements.
Reported cases show how this arrives years later. In 2007, the firefighter Andy Bathie was pursued by the Child Support Agency for two children he had helped a female same sex couple to conceive, after the couple separated and the birth mother could no longer pursue her former partner. In 2012, Mark Langridge was pursued twelve years after donating privately. In M v F and H [2013] EWHC 1901 (Fam), a married woman who met a donor through a matching site pursued him for child support, and after a fact finding hearing about how conception had happened the court held him liable for support and substantial costs.
UK government guidance also describes private family based maintenance arrangements as not legally binding, so either parent can apply to the CMS at any point regardless of what was agreed privately.
Which UK documents do have legal effect?
A short list, and everything on it is either a statutory consent given inside a licensed clinic or something recorded by a court or a registrar.
| Document | What it does |
|---|---|
| Clinic consent forms under an HFEA licence | Remove the donor’s legal fatherhood, the only pre-conception route that does |
| Birth registration | Records the legal parents, and gives an unmarried father parental responsibility if named |
| Parental responsibility agreement, form C(PRA1) | Gives parental responsibility, once recorded at the Central Family Court |
| Child arrangements order, section 8 Children Act 1989 | A court order about time and living arrangements |
| Declaration of parentage, section 55A Family Law Act 1986 | A court declaration of who a child’s parent is |
| Adoption or step-parent adoption order | Transfers legal parenthood, ending a known donor’s status as father |
The form C(PRA1) example is worth noticing, because it is the closest thing UK family law has to a private agreement with teeth. Even that has to be signed in front of a justice of the peace or an authorised court officer, sent to the Central Family Court, and it has no effect until the court records it.
If certainty about parenthood is the priority, the licensed clinic route is the answer the law provides, and it can be used with a donor you found and chose yourself. Our overview of private sperm donation in the UK covers how people combine the two, and NHS funding for donor insemination covers what that route costs where funding is not available.
What did the courts say about unregulated donation in 2025 and 2026?
Two recent judgments have made the position more visible, and both concern the same prolific unregulated donor, Robert Albon, who also uses the name Joe Donor and claims to have fathered more than 180 children. In Re CA (Children of Unregulated Sperm Donor) [2025] EWFC 130, Mr Justice Poole considered his activities in the context of care proceedings and set out the risks that unregulated donation carries, including misunderstandings about the role the donor will have in the child’s life.
In Re N (Paternity: Unregulated Sperm Donor) [2026] EWHC 878 (Fam), handed down on 21 April 2026, the President of the Family Division dealt with his application for a declaration of parentage for a child conceived by home insemination in 2021. The court accepted that he was the child’s genetic father, and refused the declaration under section 58(1) of the Family Law Act 1986 as manifestly contrary to public policy. The judgment records that there was no written agreement of any kind, and that the mother had regarded the donation as a business transaction with no continuing consequence. That understanding between the adults did not settle the legal question, which is why the case reached the High Court at all.
The President added a limit that matters for anyone reading the case as a general rule. It does not follow that every application for a declaration of parentage by someone who donated outside the HFEA scheme will be refused on public policy grounds, because informal donation by a friend is common and that case involved donation on a wholly different scale.
What do people usually put in a donor agreement?
The contents are consistent across the templates in circulation, and they make a reasonable checklist for the conversation even though none of them creates an enforceable obligation:
- the role the donor intends to have, in concrete terms rather than adjectives
- whether there will be contact, how often, and in what form as the child grows
- how many attempts are planned and over what period
- what tests each person has had and when, and whether they will be repeated
- whether the child will be told, and at what age
- whether the donor’s name will go on the birth certificate
- what happens if someone changes their mind, moves abroad, or dies
- expenses, which in the UK is the only money that can properly be involved
- whether either person would consider going through a licensed clinic
The item people skip most often is what the child will be told and when. It has the longest shelf life, because it is the only clause the child will eventually have an opinion about. Our guide to telling a child about donor conception covers what research says about timing, and donor siblings and numbers covers the question that tends to arrive later.
On money, the UK position is narrow. Payment beyond reasonable expenses is not lawful, and the HFEA caps what a donor at a licensed clinic can claim at £45 per clinic visit, with more where documented expenses such as travel or childcare are higher. A clause promising a donor a sum of money does not become lawful because both people signed it.
Is the position different in Scotland and Northern Ireland?
The parenthood rules are UK wide, because the Human Fertilisation and Embryology Act 2008 applies across the United Kingdom, so an agreement is equally incapable of deciding legal parenthood in Edinburgh, Cardiff, Belfast or Leeds.
What differs is the children’s law framework a court applies afterwards. England and Wales use the Children Act 1989, Scotland the Children (Scotland) Act 1995, and Northern Ireland the Children (Northern Ireland) Order 1995. All three make the child’s welfare the governing consideration, so the outcome for a donor agreement is the same in each.
Where does a matching platform fit in?
A platform is where people find each other and talk. sperm-donation.com does not draft agreements, review them or hold them, we are not a party to anything anyone agrees, and we do not verify what anyone says about themselves.
That is worth stating plainly because donor sites sometimes sell agreement templates alongside memberships, which creates an impression of legal backing that does not exist. If a document matters to your situation, the person to speak to is a family solicitor who practises in fertility law, before conception rather than after. Our comparison of Facebook groups and donor platforms covers where people look, and what people commonly test for covers the health conversation that runs alongside the legal one.
Frequently asked questions
Can we make a donor agreement binding by having a solicitor draft it?
No. NGA Law notes that pre-conception agreements have no fixed formalising requirements, do not need to be witnessed by a solicitor, and are not binding under UK law regardless. Legal drafting can make the document more persuasive as evidence, because it will describe the legal position accurately and show that both people had advice, and it does not convert the document into a contract a court will enforce.
Does a donor agreement still matter if we then go to a licensed clinic?
The clinic consents do the legal work, and they do it completely. Where a donor donates through an HFEA licensed clinic and signs the correct consent forms, he is not the legal father, cannot be named on the birth certificate and cannot be pursued for maintenance. A separate written agreement about role and contact is still worth having as a record of expectations, with the same non-binding status it always has.
Can an agreement stop the donor being named on the birth certificate?
Registration follows legal parenthood. Where a donor is the legal father he can be named if both he and the birth mother agree, and NGA Law points out that naming him gives him shared parental responsibility, which is a significant step. Where he is not the legal father, his name cannot be recorded at all. No private document changes either position.
Can a mother promise in writing never to claim child maintenance?
She can write it, and it has no effect. Liability depends solely on whether the donor is the child's legal father, and the Child Maintenance Service does not take private agreements into account. A claim can also be brought years later by a parent whose circumstances have changed, which is what happened in the reported cases of Andy Bathie in 2007 and Mark Langridge in 2012.
Is a donor agreement signed in another country valid in the UK?
It does not change UK legal parenthood, which is set by the Human Fertilisation and Embryology Act 2008 and by the circumstances of conception. NGA Law advises anyone connected with more than one country to take advice in both, because some jurisdictions do require a written agreement before conception in order to establish the right people as parents, and one document is then usually drafted with input from lawyers in both places.
If the donor is not a legal parent, can he apply for contact anyway?
He can ask the court for permission to apply, and NGA Law notes permission is likely where he can show sufficient connection with the child, for example through a pattern of previous contact. Section 10(9) of the Children Act 1989 sets out what the court weighs on that application. Permission is a separate question from whether an order follows, which the court decides on the child's welfare.
The short version
A donor agreement in the UK is a record of intention rather than a contract, and no amount of legal drafting, witnessing or notarising changes that. Legal parenthood is decided by the Human Fertilisation and Embryology Act 2008 and by where and how conception happened, arrangements for a child are decided by a court applying the child’s welfare, and maintenance liability follows legal fatherhood whatever anyone has signed.
The documents that do carry weight in the UK are narrow and formal: clinic consents under an HFEA licence, birth registration, a parental responsibility agreement recorded at the Central Family Court, a child arrangements order, a declaration of parentage, an adoption order. A private agreement is in none of those categories, and the reported cases show courts looking past it to what people actually did after the birth.
That is a reason to write one carefully rather than a reason to skip it, because the conversation it forces is the part with lasting value. Anyone who needs to know where they personally stand needs a family solicitor rather than a template. If you are still working out the practical side, how home insemination works and the comparison of sperm banks and known donors cover the ground before any of this becomes relevant. Profiles on sperm-donation.com are free to browse, and every decision after that stays with you.