(a) the prevention or detection of crime; (b) the apprehension or prosecution of offenders; or (c) the assessment or collection of any tax, duty or any imposition of a similar nature, shall be exempt from (i) the Second, Third, Fourth and Eighth data protection principles; (ii) sections 23 to 26; and (iii) Part VI of this Act in respect of blocking personal data, to the extent to which the application of such provisions would be likely to prejudice any of the matters specified in paragraphs (a) to (c). 47. Health and social work (1) A data controller shall be exempt from the application of section 41 where the personal data to which access is being sought relates to the physical or mental health of the data subject and the application of that section is likely to cause serious harm to the physical or mental health of the data subject or of, any other person. (2) The Prime Minister may, by notice in the Gazette or by regulations, waive the obligations imposed under section 41, on a public authority, voluntary organisations and any other similar body as may be prescribed, where such public authority, voluntary organisation or other body carries out social work in relation to a data subject or any other individual, and the application of that section is likely to prejudice the carrying out of the social work.