12. Stamp duty.
(1) Stamp duty shall not be chargeable on an instrument by which property is conveyed or transferred by a person to a limited liability partnership in connection with its incorporation within the period of one year beginning with the date of incorporation if the following two conditions are satisfied.
(2) The first condition is that at the relevant time the person -
(a) is a partner in a partnership comprised of all the persons who are or are to be members of the limited liability partnership (and no-one else), or
(b) holds the property conveyed or transferred as nominee or bare trustee for one or more of the partners in such a partnership.
(3) The second condition is that -
(a) the proportions of the property conveyed or transferred to which the persons mentioned in subsection (2)(a) are entitled immediately after the transfer are the same as those to which they were entitled at the relevant time, or
(b) none of the differences in those proportions has arisen as part of a scheme or arrangement of which the main purpose, or one of the main purposes, is avoidance of liability to any duty or tax.