(1)In this Act—
(a)" the Minister" means, in relation to the whole of Great Britain, the Minister of Agriculture, Fisheries and Food, and " Ministry " shall be construed accordingly,
(b)" the appropriate Minister " means, in relation to England, the Minister of Agriculture, Fisheries and Food, and in relation to Scotland or to Wales, the Secretary of State,
(c)" the Ministers " means, in relation to the whole of Great Britain, the Minister of Agriculture, Fisheries and Food, the Secretary of State for Scotland and the Secretary of State for Wales, acting jointly,
but in the case of any function under the following provisions of this Act—
(i)section 21, so far as it is applicable in relation to brucellosis, tuberculosis, dourine or infestation with maggot of the warble fly,
(ii)any other provision so far as it is applicable in relation to brucellosis, brucellosis melitensis, tuberculosis or infestation of cattle with the maggot of the warble fly,
that function, notwithstanding that it is expressed to be exercisable by the Minister or the Ministers, shall be exercisable only by the appropriate Minister.
(2)The powers and duties conferred and imposed by this Act on the Minister shall be executed and discharged by the Minister in manner provided by the Ministry of Agriculture and Fisheries Acts 1889 to 1919, and this Act.