Except as provided by this section, no impression of a person's footwear may be taken without the appropriate consent.
Consent to the taking of an impression of a person's footwear must be in writing if it is given at a time when he is at a police station.
Where a person is detained at a police station, an impression of his footwear may be taken without the appropriate consent if—
Where a person mentioned in paragraph (a) of subsection (3) above has already had an impression taken of his footwear in the course of the investigation of the offence by the police, that fact shall be disregarded for the purposes of that subsection if the impression of his footwear taken previously is—
If an impression of a person's footwear is taken at a police station, whether with or without the appropriate consent—
In a case where, by virtue of subsection (3) above, an impression of a person's footwear is taken without the appropriate consent—
The power to take an impression of the footwear of a person detained at a police station without the appropriate consent shall be exercisable by any constable.
Nothing in this section applies to any person—