Certificates of exception—exception from liability for, and entitlement to pay, Class 2 contributionsU.K.
46. In respect of any contribution week during the whole of which there is in force a certificate of exception in relation to a self-employed earner, that earner—
(a)shall be excepted from liability to pay a Class 2 contribution; but
(b)shall, subject to Part 6, be entitled to pay such a contribution if he so wishes.