Paragraph 25

consumes, takes, injects, ingests, conceals inside a body orifice, inhales or inhales the fumes of any substance which is—

(a)

a prohibited article;

(b)

unauthorised property; or

(c)

an article which he or she has been authorised to keep or possess but which he or she has not been specifically authorised to inhale or inhale the fumes thereof;