British Nationality Act 1948

7Registration of minors

(1)The Secretary of State may cause the minor child of any citizen of the United Kingdom and Colonies to be registered as a citizen of the United Kingdom and Colonies upon application made in the prescribed manner by a parent or guardian of the child.

(2)The Secretary of State may, in such special circumstances as he thinks fit, cause any minor to be registered as a citizen of the United Kingdom and Colonies.