(1) Save in such circumstances as may be prescribed, no aircraft while in the air over any part of the United Kingdom or the territorial waters thereof shall be used, whether wholly or partly, for emitting or displaying any advertisement or other communication in such a way that the advertisement or communication is audible or visible from the ground.
(2) Any person who uses an aircraft, or knowingly causes or permits an aircraft to be used, in contravention of the foregoing subsection shall be guilty of an offence and be liable on summary conviction—
(a) in the case of a first conviction of an offence under this section, to a fine not exceeding one hundred pounds;
(b) in any other case, to a fine not exceeding two hundred pounds, or to imprisonment for a term not exceeding three months, or to both such a fine and such imprisonment;
and subsections (6) and (7) of section six of this Act shall apply to any offence under this subsection as they apply to any offence under that section.