17.— The operator of a dog breeding establishment shall notify the particulars of any sale or transfer of a dog kept by him or her at that establishment in writing to—

( a) the local authority in whose functional area the dog breeding establishment is situated, or

( b) the person charged with the maintenance of a database to which paragraph ( aa) (inserted by section 26) of section 19(2) of the Act of 1986 F4 [ or regulations made under section 36 of the Animal Health and Welfare Act 2013 ] applies.