7.—(1) The amount of the injury pension in respect of any week, calculated as aforesaid, shall be reduced on account of any such additional benefit as is mentioned in sub-paragraph (3) to which the person concerned is entitled in respect of the same week and, subject to sub-paragraph (2), the said reduction shall be of an amount equal to that of the additional benefit or, in the case of a benefit mentioned in sub-paragraph (3)(a) or (b), of so much thereof as is there mentioned.
(2) Where the provisions governing scales of additional benefits have changed after the person concerned ceased to be a police officer, the amount of the reduction in respect of any week on account of a particular benefit shall not exceed the amount which would have been the amount thereof in respect of that week had those provisions not changed, it being assumed, in the case of such benefit as is mentioned in sub-paragraph (3)(a)(ii), that it would have borne the same relationship to the former maximum amount thereof.
(3) The following benefits are the additional benefits referred to in this paragraph—
(a)any industrial injuries benefit under section 94 of the Social Security Contributions and Benefits (Northern Ireland) Act 1992(1) in respect of the relevant injury or so much of any such pension as relates to that injury (referred to in this sub-paragraph as the relevant part of the pension), together with—
(i)any increase in such pension by way of unemployability supplement under Part 1 of Schedule 7 to that Act or so much of any such increase as is proportionate to the relevant part of that pension so, however, that where the person concerned is entitled to an unemployability supplement which is increased under Part 1 of the said Schedule, the unemployability supplement shall be deemed not to have been so increased,
(ii)any increase in such pension under section 94 of that Act (reduced earnings allowance) or so much of any such increase as is proportionate to the relevant part of that pension, and
(iii)so long as the person concerned is receiving treatment as an in-patient at a hospital as a result of the relevant injury, any increase in such pension under Part 3 of Schedule 7 to that Act (hospital treatments);
(b)any reduced earnings allowance under section 94 of that Act in respect of the relevant injury or so much of any such allowance as relates to that injury;
(c)until the first day after his retirement which is not, or is deemed not to be, a day of incapacity for work within the meaning of section 30A, or, as the case may be, a day on which he is incapable of work within the meaning of sections 68 and 69, of that Act—
(i)any incapacity benefit under section 30A of that Act,
(ii)any severe disablement allowance under sections 68 and 69, including, in each case, any increase under any provision of Part 4 of that Act (dependants).
(4) Where a person has become entitled to a disablement gratuity under Part 2 of Schedule 7 to the Social Security Contributions and Benefits (Northern Ireland) Act 1992 in respect of the relevant injury, this paragraph shall have effect as if he were entitled during the relevant period to a disablement pension of such amount as would be produced by converting the gratuity into an annuity for the said period.
In this sub-paragraph the expression “the relevant period” means the period taken into account, in accordance with section 94 of that Act, for the purpose of making the assessment by reference to which the gratuity became payable.