(1) For the relevant tax purposes the market value of the shares (or interest in shares) at the time of the acquisition is to be calculated disregarding the effect on that market value of the intellectual property agreement and any transfer of intellectual property pursuant to it.

(2) For the purposes of subsection (1) “the relevant tax purposes” are—

(a) determining any amount that is to constitute earnings from the employment under Chapter 1 of Part 3 (earnings),

(b) determining the amount of any gain realised on the occurrence of an event that is a chargeable event by virtue of section 439(3)(a) (conversion),

(c) operating Chapter 3C of this Part (acquisition of securities for less than market value), and

(d) determining any amount that counts as employment income of the employee under Chapter 5 of this Part (securities acquired pursuant to securities option).