[No. 6.] S.5 Data Protection (Amendment) Act 2003. [2003.] (ii) if the expression of opinion referred to in that paragraph was given in confidence or on the understanding that it would be treated as confidential.’’, (c) in subsection (8)(a), by the insertion after ‘‘in the interests of data subjects’’ of ‘‘or in the public interest’’, and (d) by the insertion of the following subsections after subsection (8): ‘‘(9) The obligations imposed by subsection (1)(a)(iii) (inserted by the Act of 2003) of this section shall be complied with by supplying the data subject with a copy of the information concerned in permanent form unless— (a) the supply of such a copy is not possible or would involve disproportionate effort, or (b) the data subject agrees otherwise. (10) Where a data controller has previously complied with a request under subsection (1) of this section, the data controller is not obliged to comply with a subsequent identical or similar request under that subsection by the same individual unless, in the opinion of the data controller, a reasonable interval has elapsed between compliance with the previous request and the making of the current request. (11) In determining for the purposes of subsection (10) of this section whether the reasonable interval specified in that subsection has elapsed, regard shall be had to the nature of the data, the purpose for which the data are processed and the frequency with which the data are altered. (12) Subsection (1)(a)(iv) of this section is not to be regarded as requiring the provision of information as to the logic involved in the taking of a decision if and to the extent only that such provision would adversely affect trade secrets or intellectual property (in particular any copyright protecting computer software). (13) (a) A person shall not, in connection with— (i) the recruitment of another person as an employee, (ii) the continued employment of another person, or (iii) a contract for the provision of services to him or her by another person, require that other person— (I) to make a request under subsection (1) of this section, or 20