Changing son's surname

[Dowhatsright]

Hi my niece has a two year old son, who has seen his father a handful of times since he was born. One occasion he signed the Birth certificate.
he has now been absent from the child's life for a year and has said he never wanted him.
my niece is in a stable relationship and her son calls her partner daddy. They have a strong father/ son relationship.
Her partner would like the child to have his surname, what would be the best way to go about this?

Kind regards

[PallasAthena]

You might find this page from the Coram Child Law Advice Centre useful.

Changing a child's surname - childlawadvice.org.uk

[Dowhatsright]

Thank you PallasAthena