Regulation 40(5)
1.—(1) Subject as hereinafter in this Schedule provided, the amount of a subsistence, refreshment or lodging allowance payable under regulation 40 shall be in accordance with such scale as shall be determined by the Secretary of State.
(2) The scales of refreshment allowances shall provide for the allowance payable in respect of one meal and that payable in respect of two meals.
(3) The scales of subsistence allowances shall provide for the allowance payable in respect of a period of retention or engagement on duty of—
(a)over 5 hours but not exceeding 8 hours;
(b)over 8 hours but not exceeding 12 hours;
(c)over 12 hours but not exceeding 24 hours;
(d)over 24 hours.
2. If a lodging allowance is payable as well as a subsistence allowance in respect of a period of retention or engagement on duty of 16 hours or less, the subsistence allowance shall be of the amount appropriate to a retention or engagement for a period exceeding 8 hours and not exceeding 12 hours.
3. If the chief constable is satisfied in any particular case that the amount of the allowances calculated in accordance with paragraphs 1 and 2 is not sufficient to cover the actual expenses necessarily incurred, he may authorise payment of the difference.