(1) In this Chapter -
"cumulative field expenditure" in relation to an accounting period of a company in respect of a taxable field, means the aggregate of the taxable field expenditure of the company in respect of the taxable field - (a) for that accounting period, and (b) for any preceding accounting period beginning on or after 1 January 2007;
"cumulative field profits" in relation to an accounting period of a company in respect of a taxable field, means the aggregate of the net taxable field profits of the company in respect of the taxable field - (a) for that accounting period, and (b) for any preceding accounting period beginning on or after 1 January 2007, after deducting the amount of any loss incurred in respect of the taxable field for any such period;
"net taxable field profits" in relation to an accounting period of a company, means the taxable field profits of the company for the accounting period after deducting the amount of corporation tax (if any) which
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