Change of name deed for a minor
You can use this to change the name of your child (i.e. under the age of 18), provided that you have parental responsibility for that child. You can't use this document if there is more than one other person with parental responsibility, or if there is only one other person with parental responsibility for but they don't agree to the name change.
This document is only suitable for children who are British (or Commonwealth) citizens and permanently resident in the UK. If your child is aged 16 or over, they'll also need to agree to the change of name by signing in both their new and old names.
Note that if your child is 16 or 17 and are (or has been) married or in a civil partnership, you'll no longer have parental responsibility for that child and you can't use this document.