9.—(1) Section 163(1) (interpretation of Part 11 and supplementary provisions) is amended in accordance with this paragraph.E+W+S
(2) In the definition of “employee” omit paragraph (b) and the word “and” preceding it.
(3) For the definition of “employer” substitute—
““employer”, in relation to an employee and a contract of service of his, means a person who—
(a)under section 6 above is liable to pay secondary Class 1 contributions in relation to any earnings of the employee under the contract, or
(b)would be liable to pay such contributions but for—
(i)the condition in section 6(1)(b), or
(ii)the employee being under the age of 16:”.