(1) Any person who causes, or attempts to cause, or does any act calculated to cause, disaffection amongst the members of any police force, or induces or attempts to induce, or does any act calculated to induce, any member of a police force to withhold his services, shall be guilty of an offence and liable—
(a) on summary conviction, to imprisonment for a term not exceeding six months or to a fine not exceeding the statutory maximum, or to both;
(b) on conviction on indictment, to imprisonment for a term not exceeding two years or to a fine, or to both.
(2) This section applies in the case of—
(a) special constables appointed for a police area,
(aa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) members of the Civil Nuclear Constabulary, and
(c) members of the British Transport Police Force,
as it applies in the case of members of a police force.
(3) Liability under subsection (1) for any behaviour is in addition to any civil liability for that behaviour.