(1) Reasonable force may be used for the purpose of gaining entry to any premises (other than residential premises) under a power conferred by this Part, but only if authorised by the council in accordance with this section.
(2) The authority of the council--(a) must be in writing, and(b) must be given in respect of the particular entry concerned, and(c) must specify the circumstances which are required to exist before force may be used.