4.—Section 8 of the Principal Act is hereby amended by—

( a ) the substitution in paragraph (a) of subsection (1) of "£10 for each year of the period of validity of the licence" for "£5",

( b ) the substitution in paragraph (b) of subsection (1) of "£200 for each year of the period of validity of the licence" for "£100% and

( c ) the substitution of the following subsection for subsection (2):

"(2) The Minister may, by regulations, vary the rates specified in subsection (1) of this section and such a variation may include a specification of different rates in respect of different classes of dogs, the classifications being determined in such manner or by reference to such matters as may be specified in the regulations.".