Short title, interpretation, commencement and extent.
18. - (1) This Act may be cited as the Public Interest Disclosure Act 1998.
(2) In this Act "the 1996 Act" means the Employment Rights Act 1996.
(3) Subject to subsection (4), this Act shall come into force on such day or days as the Secretary of State may by order made by statutory instrument appoint, and different days may be appointed for different purposes.
(4) The following provisions shall come into force on the passing of this Act-
(a) section 1 so far as relating to the power to make an order under section 43F of the 1996 Act,
(b) section 8 so far as relating to the power to make regulations under section 127B of the 1996 Act,
(c) section 17, and
(d) this section.
(5) This Act, except section 17, does not extend to Northern Ireland.
The substantive provisions of the Act came into force on 2nd July 1999 in England, Wales and Scotland.
 Hansard HL 11 May 1998, Lord Borrie QC, col. 889
 Parliamentary consideration of the Act can be found at
Parliamentary Debates HC, Standing Committee D, 11 March 1998; Hansard HC, 24 April 1998, cols. 1124 -1144; Hansard HL, 11 May 1998, cols. 888 - 904; Hansard HL, 5 June 1998, cols. 611 - 639; and Hansard HL, 19 June 1998, cols. 1798 - 1804. While there was no debate at Second Reading in the Commons in 1997, the principles behind the legislation were debated the previous year – Hansard HC 1 March 1996 col 1108 et seq. It should be noted that where the construction of this Act may be open to more than one interpretation, these annotations draw on the statements in Parliament not only of the Minister but of the promoters of the Bill (Richard Shepherd MP and Lord Borrie QC). This is because along with Ministerial statements, those of the promoter are recognised as relevant authority for purposes of construction when permitted under the rule in Pepper v Hart (1993) 1 All ER 42.
 (Hansard HL, 5 June 1998, col. 614).