(1) In the case of a borough constituency listed in the first column of the Table in each of Parts 1, 2 and 4 to 9 of Schedule 1 (being a constituency in England which is not coterminous with or wholly contained in a district), the returning officer for a parliamentary election is the chairman of the council listed in the second column of that Table opposite to the name of the constituency.
(2) In the case of a borough constituency listed in the first column of the Table in Part 3 of Schedule 1 (being a constituency which is situated partly in one London borough and partly in another), the returning officer for a parliamentary election is—
(a) where a London borough council are operating executive arrangements which involve a mayor and cabinet executive or a mayor and council manager executive , the chairman of the council of the London borough listed in the second column of that Table opposite to the name of the constituency, and
(b) in any other case, the mayor of the London borough referred to in sub-paragraph (a).
(3) In the case of the Cardiff North (Gogledd Caerdydd), Cardiff South and Penarth (De Caerdydd a Phenarth) and Cardiff West (Gorllewin Caerdydd) constituencies (each being a borough constituency in Wales which is not coterminous with or wholly contained in a county or county borough), the returning officer for a parliamentary election is the chairman of the City and County of Cardiff Council.