Every document purporting to be a notice, certificate, order or declaration, or an entry in a register, or a subscription of an oath of allegiance, given, granted or made under this Act or any of the former nationality Acts shall be received in evidence and shall, unless the contrary is proved, be deemed to have been given, granted or made by or on behalf of the person by whom or on whose behalf it purports to have been given, granted or made.

Prima facie evidence of any such document may be given by the production of a document purporting to be certified as a true copy of it by such person and in such manner as may be prescribed.

Any entry in a register made under this Act or any of the former nationality Acts shall be received as evidence (and in Scotland as sufficient evidence) of the matters stated in the entry.

A certificate given by or on behalf of the Secretary of State that a person was at any time in Crown service under the government of the United Kingdom or that a person’s recruitment for such service took place in the United Kingdom shall, for the purposes of this Act, be conclusive evidence of that fact.