Chapter 1 of Part 7 of the Principal Act is hereby amended in section 198 -
(a) by renumbering the existing provision as subsection (1) of that section, and
(b) by the addition of the following:
"(2) In relation to interest paid in respect of a relevant security (within the meaning of section 246), subsection (1) shall apply -
(a) as if there were deleted from subsection (2) of section 445 ', and any certificate so given shall, unless it is revoked under subsection (4), (5) or (6), remain in force until the 31st day of December, 2005', and
(b) as if there were deleted from subsection (2) of section 446 ', and any certificate so given shall, unless it is revoked under subsection (4), (5) or (6), remain in force until the 31st day of December, 2005'.".