Baby surname checker

No statute in the UK limits the choice, so neither the father's surname nor the mother's surname applies automatically. Siblings need not match, and a combined name may have any number of parts, in any order, with or without a hyphen. Scotland and Northern Ireland impose no restriction either. A court steps in only when a parent challenges the name, deciding by what is best for the child.

In England and Wales the register records the surname by which "it is intended that the child shall be known" (Registration of Births and Deaths Regulations 1987, regulation 9). That name is the one the birth certificate shows. So the answer to "can I give my baby any surname" is yes, in law.

For married parents Smith and Jones in England, the result shows Smith, Jones, Smith-Jones, or Jones-Smith, with no default. These 4 are examples built from their names, not a closed list.

The surname is fixed by whoever registers the birth, called the qualified informant in registration law. For England and Wales the deadline is 42 days from the birth. Registration takes place at a register office, where a registrar enters the details. After 12 months the Registrar General's authority is needed.

• GOV.UK confirms that married parents and civil partners, married at the birth or at the conception, can each register alone, and both parents' details still go on the register.
• For unmarried parents, the father is entered only by joint registration, a statutory declaration, a parental responsibility agreement or order, or certain other court orders. Otherwise the mother registers alone.
• Same-sex couples follow the same pattern. Female couples who meet the conditions of the Human Fertilisation and Embryology Act 2008 register as two parents; male couples need a parental order first.

The trip home from hospital has rules of its own, which the child car seat checker sets out by age and height.

Whichever surname the registering parent gives. Searches for a baby's surname if not married often assume the mother's name applies by law; it does not. Marriage changes who may register, not which names are allowed.

When unmarried parents register together, both are named and they settle the surname between them. A mother registering alone can still give the surname of a father who is not entered on the register. For a mother called MacLeod registering alone in Scotland, with a father called Campbell, the checker lists MacLeod, Campbell, MacLeod-Campbell, or Campbell-MacLeod.

Parental responsibility means the rights and duties a parent holds for a child. An unmarried father gets it by being registered, for births registered in England or Wales from 1 December 2003 (Children Act 1989). The dates are 4 May 2006 in Scotland and 15 April 2002 in Northern Ireland. A father left off the register can still gain it through a signed agreement with the mother or a court order.

A double-barrelled surname joins two surnames, usually one from each parent, into one family name. Registration sets no rule on which part comes first, on whether a hyphen or a space joins them, or on how many parts there are. The checker shows both orders with a hyphen: for Smith and Jones, Smith-Jones and Jones-Smith.

A blended surname, made by merging parts of both names into a new word, is simply another surname and is allowed in the same way.

When one parent's surname already contains the other's, no combination is offered, because it would repeat a name. For a mother called Smith-Jones and a father called Jones, the list holds only Smith-Jones or Jones. Parents both called Patel see just Patel.

A middle name works differently. It is a forename, so a parent's surname given as a middle name is recorded without becoming part of the family name.

Yes. No UK rule makes siblings share a surname, so every birth registration is a fresh choice. An older child's name binds no younger brother or sister.

Take unmarried parents Hughes and Evans registering together, whose first child was registered as Hughes Evans, without a hyphen. For the second child the list holds Hughes, Evans, Hughes-Evans, Evans-Hughes, or Hughes Evans: 5 surnames, with the older child's form as one option among them.

No official guidance found sets out what a registrar does when two parents registering together cannot agree. The reading here is that no surname is entered until they agree or a court decides; it explains the rules and is not legal advice, as the disclaimer sets out.

The English and Welsh court route is a specific issue order, an order that settles one disputed question about a child, applied for on the GOV.UK form C100. The child's welfare decides. Case law gives the surname already on the register real weight, without making it decisive.

A child arrangements order settles where and with whom a child lives. While one is in force, a new surname needs the written consent of everyone with parental responsibility or the leave of the court (Children Act 1989, s13). Scotland has its own route under the Children (Scotland) Act 1995, again with welfare as the test.

Once registered, a surname is not simply corrected. For a birth registered in England or Wales, a later change needs everyone with parental responsibility to agree, or a court order. GOV.UK describes a deed poll as the usual way to make it. From 16, the child must consent as well.

A deed poll is a signed document declaring a new name; an enrolled deed poll is also recorded with the court and published in The Gazette. A change of name deed is similar.

Re-registration after the parents marry used to be a second route. HM Passport Office guidance says the General Register Office and GRONI allowed the surname to change during that re-registration only before 13 July 2026. On or after that date, a deed poll or change of name deed is needed. The guidance presents this as a change of practice, and no new legislation behind it was found.

Re-registration to add an unmarried father who was left off the register never changes the surname. It adds his details, and with them parental responsibility.

Scotland runs its own registration system, so its deadline is shorter: 21 days from the birth, at a local registration office (National Records of Scotland). After 3 months the Registrar General's authority is needed. A father not married to the mother is entered on a joint request, through statutory declarations or after a decree of paternity.

Scotland records later changes rather than relying on a deed poll. While the child is under 16, a parent with parental responsibilities may have one change of surname recorded. Adding a hyphen counts as a change (1965 Act, s43).

Northern Ireland allows 42 days, the same as England and Wales, and its register is kept by the General Register Office for Northern Ireland, GRONI. While the child is under 18, one change of forename and one change of surname may be recorded (nidirect).

The headline counts the surnames built from the typed names, and under "Surnames from your names" each one says where it comes from.

• "Without a choice or agreement" explains who gives the surname and how a dispute is settled, for the nation chosen.
• "Rules for this case" adds the deadline, who can register, any rule on hyphens or siblings, and how a later change works.
• The "Default" badge never appears on a UK result, because UK law sets no default surname.

Surnames stay in the browser; only the nation and the family situation go into a shared link. The two worked cases behind the count are under checked cases, and the approach is set out in the methodology.