12Local authority members of police authorities for areas in England and Wales shall exercise—
(a)their powers to appoint members of the NCIS Service Authority under paragraphs 4, 7(c) and 8(1)(e), and
(b)their powers to appoint members of the NCS Service Authority under paragraphs 4, 9(b) and 10(1)(c),
so as to ensure that, so far as practicable, the members of the Authority appointed by them reflect the balance of parties for the time being prevailing among the local authority members of such police authorities taken as a whole.
13The clerk to a Service Authority shall make such arrangements as he considers necessary to facilitate the appointment to the Authority, in accordance with this Schedule, of—
(a)local authority members of police authorities for areas in England and Wales, and
(b)in the case of the clerk to the NCIS Service Authority, members of police authorities for areas in Scotland and members of the Police Authority for Northern Ireland.