This section applies to—
Fingerprints and DNA profiles to which this section applies ("section 63D material") must be destroyed if it appears to the responsible chief officer of police that—
In any other case, section 63D material must be destroyed unless it is retained under any power conferred by sections 63E to 63O (including those sections as applied by section 63P).
Section 63D material which ceases to be retained under a power mentioned in subsection (3) may continue to be retained under any other such power which applies to it.
Nothing in this section prevents a speculative search, in relation to section 63D material, from being carried out within such time as may reasonably be required for the search if the responsible chief officer of police considers the search to be desirable.