Changing a child's surname — what you need to know

REVIEWED BY: Sean McNamara on 2026-08-29

The rule

If all people with parental responsibility (PR) agree, a child's surname can be changed by deed poll or by usage. If they don't all agree, you need a Specific Issue Order (to change it) or a Prohibited Steps Order (to prevent a change).

Who has parental responsibility

Mothers — always
Fathers — if married to the mother at birth, or named on the birth certificate (post 1 Dec 2003), or via PR agreement/order
Step-parents, grandparents, others — only via PR agreement or order

See our parental responsibility guide for the full picture.

Changing by deed poll

A deed poll is a legal document declaring the change — free to self-enrol or use a service (fees vary)
Both PR holders must consent — if one refuses, a court order is needed
The child's birth certificate is not changed by deed poll (the original record stands)

What the court considers (if there's a dispute)

The key case is Dawson v Wearmouth [1999] — the child's welfare is paramount. The court considers:

The welfare checklist (see our guide)
The registered surname — courts are reluctant to change a registered surname without a strong reason
The identity and heritage the surname represents (important to both sides)
Whether the change is being sought for a genuine reason or to sideline the other parent
The age and wishes of the child (older children's views matter more)

Practical steps if you want to change the name

1. Ask the other PR holder in writing for written consent 2. If they agree, use a deed poll service or self-enrol via the court 3. If they refuse, apply for a Specific Issue Order (C100) — the court decides based on welfare

If the other parent has already changed the name without your consent

Apply urgently for a Prohibited Steps Order to prevent the change taking effect
If already changed, apply for a Specific Issue Order to revert it
The court can direct the school, GP, passport office to use the original surname pending the hearing

Passport applications

A child's passport must be in the name on their birth certificate (or a deed poll that both PR holders have consented to)
One parent cannot apply for a passport in a new surname without the other's consent if they hold PR

Official links

Deed poll: https://www.gov.uk/change-name-deed-poll
Passport rules: https://www.gov.uk/get-a-child-passport
C100: https://www.gov.uk/looking-after-children-divorce

This page is general information, not legal advice. YourFamilyCase.co.uk is an independent information directory and is not affiliated with HMCTS or gov.uk.

Content verified against the official HMCTS court directory, gov.uk forms and fees pages, and the professional body registers (SRA, FMC, Bar Council). Last reviewed September 2026.