Schedule 7, Part VI Alternative accounting rules (paras. 26-31)
26. The rules set out in paragraphs 8 to 25 of this Schedule are referred to below in this Schedule as the historical cost accounting rules.
27. Subject to paragraphs 29, 30 and 31, the amounts to be included in respect of assets of any description mentioned in paragraph 28 may be determined on any basis so mentioned.
(1) Intangible fixed assets, other than goodwill, may be included at their current cost.
(2) Tangible fixed assets may be included at a market value determined as at the date of their last valuation or at their current cost.
(3) Investments of any description falling to be included under Asset items C.2 and 3 in Parts I and II of Schedule 2 and under Asset item C.4 in Part II of Schedule 2, and all other securities held as financial fixed assets may be included either -
(a) at a market value determined as at the date of their last valuation, or