The re-registering of a child's birth occurs for the following reasons:

• If the natural parents marry after the birth of their child they are required under the Legitimacy Act 1976 to apply for the re-registration of their child's birth.
• A birth may be re-registered to include the details of the natural father where the parents were not married at the time of the birth, have not married since and no father's name was recorded at the time of the birth, have not married since and no father's name was recorded at the time of the original registration.