Where it appears to—
(a) the trust or any servant or agent of the trust; or
(b) any person in lawful occupation of the showgrounds or any part thereof at a particular time or any servant or agent of that person; or
(c) any member of an association in lawful occupation of the showgrounds or any part thereof at a particular time;that there are reasonable grounds for apprehending injury or annoyance to members of the public or damage to the showgrounds or any part thereof from any structure or thing that is on the showgrounds in breach of a by-law of the trust it is lawful for the trust or, as the case may be, such person, member, servant or agent to take all steps necessary to remove or dismantle such structure or thing and no liability shall be incurred on account of any such step taken without negligence.