(1) Section 77(6) shall not affect the liability to tax of an overseas life assurance company in respect of the investment income of its life assurance fund under section 726 or in respect of the profits of its annuity business under sections 715, 717 and 727.
(2) For the purposes of section 25(3) as it applies to life business, the amount of the income tax referred to in that section which shall be available for set-off under that section in an accounting period shall be limited in accordance with subsections (3) and (4).
(3) Where the company is chargeable to corporation tax for an accounting period in accordance with section 726 in respect of the income from the investments of its life assurance fund, the amount of income tax available for set-off against any corporation tax assessed for that period on that income shall not exceed an amount equal to income tax at the standard rate on the portion of income from investments which is chargeable to corporation tax by virtue of subsectio
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