(1)In this Act, except in so far as the context otherwise requires—
" international arrangements " includes any arrangements between the United Kingdom and a colony ;
" order " includes any sentence, direction, warrant or other means of giving effect to the decision of a court or tribunal; and
"the prisoner" has the meaning given by section 1(1)(b) above.
(2)In this Act a reference to criminal jurisdiction, in relation to a court or tribunal in a country or territory outside the British Islands, includes a reference to any jurisdiction which would be a criminal jurisdiction but for the age or incapacity of the persons in respect of whom it is exercised.
(3)In any proceedings, the certificate of the Secretary of State—
(a)that a particular country or territory is a party to any such international arrangements as are mentioned in section 1(1)(a) above,
(b)that the appropriate authority of a country or territory which is such a party has agreed to the transfer of a particular person in accordance with any such arrangements, or
(c)that, for the purposes of any provision of this Act, a particular person is or represents the appropriate authority of any country or territory,
shall be conclusive of the matter certified.