Section 136 of the Act of 1992 is hereby amended by the substitution of the following subsection for subsection (6):

"(6) For the purposes of subsection (5) the Commissioners may, subject to compliance with such conditions for securing payment as they may think fit to impose, permit payment of vehicle registration tax to be deferred -

(a) to a day not later than the 15th day of the month following that in which the tax is charged,

or

(b) in the case of a new category A vehicle purchased by an authorised person carrying on the business of hiring vehicles to others under short-term self-drive contracts (within the meaning of section 134(11)(b)) and intended for use solely for the purposes of such hiring in the course of that business -

(i) if the tax is charged on or after the 1st day of December in any year and prior to the 1st day of September in the following year, to a day not later than the 15th day of September in the said following year, or

(ii) if the tax is charged on or after the 1st day of September in any year and prior to the 1st day of December in that year, to a day not later than the 15th day of December in that year,

or the day of the cessation, in relation to the vehicle, referred to in section 134(11)(a), whichever is the earlier.".