There are several ways that a child can meet the requirements to register as a British citizen. Depending on the child's circumstances, they will be able to apply for registration as a British citizen by entitlement or discretion. These terms are explained below. If the child has a right under British nationality law to apply and be registered as a British citizen this is an entitlement. If the child does not have a right under British nationality law to apply and be registered as a British citizen, registration will be at the UK Border Agency's discretion. In these cases they will consider the circumstances of the child's case and whether it is reasonable for them to be registered as a British citizen. If the child is applying for registration at The UK Border Agency's discretion you should provide as much evidence as possible to support the case. It is possible that some families include some children with an entitlement to register and others without. If an application is made from families in these circumstances you are asked to indicate on the form if you still wish to register the children who have an entitlement to British citizenship if other applications are unsuccessful. If you do so, the children will have different nationalities. For all registrations, the child must: be under 18 on the date we receive the application; and be of good character if they are 10 years or over on the date of application. The child must also meet the requirements of certain sections of the British Nationality Act 1981.