In this section "stock lending arrangement" means so much of any arrangements between two persons ("the borrower" and "the lender") as are arrangements under which—
Subject to the following provisions of this section and sections 263C(2) and 263CA(3) and (5), the disposals and acquisitions made in pursuance of any stock lending arrangement shall be disregarded for the purposes of capital gains tax.
Where—
any question relating to the acquisition of the securities disposed of shall be determined (without prejudice to the provisions of Chapter I of Part IV) as if the securities disposed of were the securities with which that requirement (so far as relating to the securities disposed of) has been or will be discharged.
References in this section, in relation to a person to whom securities are transferred, to the transfer of those securities back to another person shall be construed as if the cases where those securities are taken to be transferred back to that other person included any case where securities of the same description as those securities are transferred to that other person either—
For the purposes of this section securities shall not be taken to be of the same description as other securities unless they are in the same quantities, give the same rights against the same persons and are of the same type and nominal value as the other securities.
In this section "securities" has the meaning given by section 263AA.