(1) Copyright in a work is not infringed by anything done in relation to the work, by or on behalf of the Crown or any person authorised in writing by a government department,—
(2) Where any act is done under subsection (1), the Crown shall be liable to pay, out of money appropriated by Parliament for the purpose, equitable remuneration to the copyright owner upon such terms as may be agreed upon between the Crown and the copyright owner or, in the absence of agreement, upon such terms as shall be determined by the Tribunal.