Oil Taxation Act 1975

4 (1) A claim for the allowance, in connection with an oil field, of any unrelievable field loss allowable under section 6 of this Act in the case of a participator in that field must be made by the participator to the Board and must be made within six years of the later of the following dates, that is to say the date of the decision (whether of the Board or on appeal from the Board) that the winning of oil from the oilfield in the case of which the loss accrued has permanently ceased, and the date of the determination under Schedule 1 to this Act of the last-mentioned field.

(2) Where a claim under this Schedule has been made and the participator by whom it was made subsequently discovers that an error or mistake has been made in the claim, he may make a supplementary claim within the time allowed for making the original claim.

(3) The provisions of Schedule 5 to this Act specified in the first column of the Table set out in paragraph 1(3) of Schedule 7 to this Act shall apply in relation to a claim under this Schedule as they apply in relation to a claim under the said Schedule 5, subject to any modifications specified in the second column of that Table and with the substitution, for references to the responsible person, of references to the participator by whom the claim under this Schedule is made, for references to the claiming or allowance of expenditure, of references to the claiming or allowance of an unrelievable field loss and, for references to section 3 or 4 of this Act, of references to section 6 of this Act.