s 2 Evidence.
(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (3) In proceedings under this Act relating to indecent photographs of children a person is to be taken as having been a child at any material time if it appears from the evidence as a whole that he was then under the age of 18 .