(1) Subject to this Act -
(a) every person who, being over the age of 16 years and under pensionable age (not being a person included in any of the classes of person specified in Part III of the First Schedule) who has reckonable income or reckonable emoluments shall be a self-employed contributor for the purposes of this Act, regardless of whether he is also an employed contributor,
(b) every person becoming for the first time a self-employed contributor shall thereby become insured under this Act and shall thereafter continue throughout his life to be so insured, and
(c) in the case of a person who, not having been an employed contributor at any time, becomes for the first time a self-employed contributor the first day of the contribution year in which he becomes a self-employed contributor shall be regarded as the date of entry into insurance.
(2) Regulations may provide for -
(a) including among self-employed contributors classes of person or part of any such class of person s