(1) Personal data processed for any of the following purposes -
(a) the prevention or detection of crime,
(b) the apprehension or prosecution of offenders, or
(c) the assessment or collection of any tax or duty or of any imposition of a similar nature,
are exempt from the first data protection principle (except to the extent to which it requires compliance with the conditions in Schedules 2 and 3) and section 7 in any case to the extent to which the application of those provisions to the data would be likely to prejudice any of the matters mentioned in this subsection.
(2) Personal data which -
(a) are processed for the purpose of discharging statutory functions, and
(b) consist of information obtained for such a purpose from a person who had it in his possession for any of the purposes mentioned in subsection (1),
are exempt from the subject information provisions to the same extent as personal data processed for any of the purposes mentioned in that subsection.