18(1)A relevant transfer is not to give rise to liability to stamp duty.
(2)Stamp duty is not to be chargeable on a transfer scheme.
(3)Stamp duty is not to be chargeable on an instrument which is certified to the Commissioners of Inland Revenue by the Secretary of State as having been made for the purposes of (or for purposes connected with) a transfer scheme.
(4)But no instrument which is certified as mentioned in sub-paragraph (3) is to be taken to be duly stamped unless—
(a)it is stamped with the duty to which it would be liable but for that sub-paragraph, or
(b)it has, in accordance with section 12 of the [1891 c. 39.] Stamp Act 1891, been stamped with a particular stamp denoting that it is not chargeable with that duty or that it is duly stamped.
(5)Stamp duty is not to be chargeable on an instrument which is made under Schedule 6.