This section applies where—
But this section does not apply if—
Where this section applies, neither section 144ZA nor the following provisions of section 144 shall apply in relation to the option—
but subsection (4) or (5) below shall instead have effect (subject to subsection (6) below).
If the option binds the grantor to buy—
shall be deemed for the purposes of tax in respect of chargeable gains to be the market value, at the time the option is exercised, of what is bought.
If the option binds the grantor to sell—
shall be deemed for the purposes of tax in respect of chargeable gains to be the market value, at the time the option is exercised, of what is sold.
But if the whole or any part of the underlying subject matter of the option (see subsection (7)) is subject to any right or restriction which is enforceable by the person disposing of the underlying subject matter or a person connected with him—
In this section "underlying subject matter", in relation to an option, means—