In this Chapter "trading company" and "the holding company of a trading group" have the same meaning as in section 165 (see section 165A).
For the purposes of this Chapter a company is not to be regarded as ceasing to be a trading company, or the holding company of a trading group, merely because of anything done in consequence of—
But subsection (2) applies only if—
is for genuine commercial reasons and is not part of a scheme or arrangement the main purpose or one of the main purposes of which is the avoidance of tax.