s 486 Pre-trading expenditure of qualifying trades, etc.
(1) If a person incurs capital expenditure with a view to carrying on a trade or a part of a trade, this Part applies as if the expenditure were incurred by the person on the first day on which the trade or part of the trade is carried on. (2) If a person incurs capital expenditure— (a) in connection with a dock or other premises, and (b) with a view to occupying the dock or premises for the purposes of a qualifying trade which is not a qualifying trade within section 484(2)(a), this Part applies as if the expenditure were incurred by the person when he first occupies the dock or premises for the purposes of the qualifying trade.