(2)Where the Secretary or any person authorised by him has reason to believe that in any place any animal intended for human food is being slaughtered or any carcasses, is being skinned or cut up, or that any food is being manufactured, stored, prepared, packed, cleansed, kept or exposed for sale or sold without or otherwise than in conformity with a licence, he may enter any such place without, notice, at any time, by day or night for the purpose of satisfying himself whether any provision of laws, byelaws or regulations or any condition of a licence is being contravened.