Part V Functions of Secretary of State and Department of Justice46 Expenditure by F1Department of Justice for police purposes.The F2Department of Justice may—(a)make such contribution to the provision or maintenance of such organisations, facilities and services; and(b)make such other payments,as F3the Department of Justice thinks necessary or expedient for promoting the efficiency and effectiveness of F4—(a)the Police Service of Northern Ireland;(b)the Police Service of Northern Ireland Reserve;(c)the police support staff; and(d)traffic wardens.