(6) Where in any criminal or civil proceedings brought by virtue of this Chapter with respect to the alleged infringement of copyright in a cinematograph film it is proved that the name purporting to be the name of the author of that film appears thereon in the prescribed manner, the person whose name so appears shall be presumed to be the author of that film unless the contrary is proved. (7) Where in any criminal or civil proceedings brought by virtue of this Chapter with respect to the alleged infringement of copyright in a sound recording it is proved that records embodying that recording or part thereof have been issued to the public and that at the time of such issue there appeared on a label or any other printed matter affixed to such records or in or on anything in which they were contained, a statement claiming(a) that a person named on the label or printed matter is the author of that recording; or (b) that the recording was first published in a year and at a place specified on the label or printed matter, that label or printed matter shall be sufficient evidence of the facts so stated, except in so far as the contrary is proved. (8) A claim contemplated in paragraph (a) of subsection (7) may be made by means of the symbol 'C' in conjunction with the name of the person concerned, and a claim contemplated in paragraph (b) of that subsection may be made by means of the symbol 'P' in conjunction with the year and place in question. (9) Where in any civil proceedings brought by virtue of this Chapter with respect to the alleged infringement of the copyright in a cinematograph film it is proved that the person alleged to have committed an infringement has done an act which the owner of the copyright has the exclusive right to do or to authorise, it shall be presumed, unless the contrary is proved, that such person did that act without the required authority. (10) In any civil proceedings brought by virtue of this Chapter with respect to the alleged infringement of the copyright in a cinematograph film, sound recording or computer program, it shall be presumed, unless the contrary is proved, that a person trading in the selling, letting or distribution of copies of any works of such descriptions and who was found in possession of a copy of any of such works has sold or let or by way of trade offered or exposed for sale or hire such copy. (11) Where in any civil proceedings brought by virtue of this Chapter with respect to the alleged infringement of the copyright in a work it is proved that the person alleged to have done an act which allegedly infringes the relevant copyright did that act without the authority of the exclusive licensee, it shall be presumed, unless the contrary is proved, that the relevant act was done also without the authority of the owner of the copyright concerned. 33 Offences and penalties and proceedings in respect of dealings which infringe copyright (1) A person who, at a time when copyright subsists in a work(a) without the authority of the owner of the copyright(i) makes for sale or hire; (ii) sells or lets or by way of trade offers or exposes for sale or hire;