(1) This regulation applies in the case of a person who–
(a) on 5th October 1989 is a director of a company and has been such a director continuously since 6th April 1989 and in respect of whose earnings, by virtue of regulation 6A(1) and (3), the earnings period is the year beginning on 6th April 1989; or
(b) on or after 5th October 1989 is a director of a company and in respect of whose earnings the earnings period falls to be determined in accordance with–
(i) regulation 6A(1) and (2), or
(ii) regulation 6A(1) and (3),
and which commenced during the period beginning with 6th April 1989 and ending with 4th October 1989; or
(c) is a person whose earnings, by virtue of regulations 2, 3, 5A, 21 or 22, are assessed by reference to an earnings period which is the year beginning on 6th April 1989; or
(d) after 5th April 1989 but before 5th October 1989 ceased to be a director of a company and–
(i) in respect of whose earnings, by virtue of regulation 6A(1) and (3), the earnings period is the year beginning on 6th April 1989, or
(ii) in respect of whose earnings, the earnings period is determined by virtue of regulation 6A(1) and (2),
and is paid earnings in respect of any employed earner’s employment with that company at any time in the period beginning with 5th October 1989 and ending with 5th April 1990; or
(e) ceased to be a director of a company before 6th April 1989, and–
(i) in respect of whose earnings, by virtue of regulation 6A(1) and (5), the earnings period is the year beginning on 6th April 1989, and
(ii) is paid earnings in respect of any period during which he was such a director at any time in the period beginning on 5th October 1989 and ending with 5th April 1990; or
(f) is a person whose earnings, by virtue of regulations 2, 3, 5A, 21 or 22, are assessed by reference to an earnings period which is the year beginning on 6th April 1989 and–
(i) after 5th April 1989 but before 5th October 1989 ceased to be employed in the employment from which those earnings derived, and
(ii) is paid any such earnings in the period beginning with 5th October 1989 and ending with 5th April 1990.
(2) In the case of primary Class 1 contributions, in a case to which this regulation applies–
(a) where the earnings period is the period mentioned in paragraph (1)(a), (b)(ii), (c), (d)(i), (e) or (f) of this regulation, for the purposes of section 4(6A) of the Act (incidence of Class 1 contributions) the primary percentages shall be–
(i) where the earnings in that earnings period do not exceed £2236, 3.5 per cent;
(ii) where the earnings in that earnings period exceed £2236 but do not exceed £3899.99, 3.5 per cent. of those earnings which do not exceed £2236 and 7 per cent. of those earnings which exceed £2236;
(iii) where the earnings in that earnings period exceed £3899.99 but do not exceed £5979.99, 4.5 per cent. of those earnings which do not exceed £2236 and 8 per cent. of those earnings which exceed £2236;
(iv) where the earnings in that earnings period exceed £5979.99, 5.5 per cent. of those earnings which do not exceed £2236 and 9 per cent. of those earnings which exceed £2236 but do not exceed £16,900;
(b) where the earnings period is the period mentioned in paragraph (1)(b)(i) or (d)(ii) of this regulation, for the purposes of section 4(6A) of the Act the primary percentages shall be obtained by dividing the amount of the earnings paid in the earnings period by the number of weeks therein and by applying the quotient as if it were a payment of weekly earnings.