s 15C Presumptions
In any prosecution under this Act— (a) it shall not be necessary for the prosecution to prove that an organization, body or group of persons possesses a name or that it has been constituted or is usually known under a particular name; (b) where any books, accounts, writings, lists of members, seals, banners or insignia of, or relating to, or purporting to relate to, any organization, body or group of persons are found in the possession, custody or under the control of any person, it shall be presumed, until the contrary is proved, that such person is a member of such organization, body or group, and such organization, body or group shall be presumed, until the contrary is proved, to be in existence at the time such books, accounts, writings, lists of members, seals, banners or insignia are so found; and (c) where any books, accounts, writings, lists of members, seals, banners or insignia of, or relating to, any organization, body or group of persons are found in the possession, custody or under the control of any person, it shall be presumed, until the contrary is proved, that such person assists in the management of such organization, body or group.