19(1)For the purposes of this Act, it shall be assumed that any shares or securities held by a person on 6th April l965 (identified in accordance with paragraph 18 above) which, in accordance with Chapter II of Part IV, are to be regarded as being or forming part of a new holding were sold and immediately reacquired by him on 6th April 1965 at their market value on that date.
(2)If, at any time after 5th April 1965, a person comes to have, in accordance with Chapter II of Part IV, a new holding, paragraph 16(3) to (5) above shall have effect as if—
(a)the new holding had at that time been sold by the owner, and immediately reacquired by him, at its market value at that time, and
(b)accordingly, the amount of any gain on a disposal of the new holding or any part of it shall be computed—
(i)by apportioning in accordance with paragraph 16 above the gain or loss over a period ending at that time, and
(ii)by bringing into account the entire gain or loss over the period from that time to the date of the disposal.
(3)This paragraph shall not apply in relation to a reorganisation of a company’s share capital if the new holding differs only from the original shares in being a different number, whether greater or less, of shares of the same class as the original shares.