http://www.legislation.gov.uk/apni/1933/5/section/4Destructive Imported Animals Act (Northern Ireland) 1933An Act to make provision for prohibiting or controlling the importation into and the keeping within Northern Ireland of destructive non-indigenous animals, for exterminating any such animals which may be at large, and for purposes connected with the matters aforesaid.texttext/xmlenStatute Law Database2021-07-21Expert Participation2020-12-31 4While an order under section one of this Act is in force, any authorised officer or other authorised person shall at all reasonable times be permitted, on production of his authority if so required, to enter and inspect any land occupied by a person holding a licence under this Act and any other land in a case where he has reason to believe that musk rats are being kept or may be found thereon.