6.—(1) The amount of an injury pension shall be reduced, where the person concerned received the relevant injury (within the meaning of regulation 11) during a period of service as a regular police officer, by _ of any other pension calculated by reference to Schedule B to the 1987 Regulations.
(2) For the purposes of sub paragraph (1), such other pension as is there mentioned which is reduced–
(a)in accordance with the provisions of regulation B7 (commutation-general provisions or B9 (allocation) of the 1987 Regulations;
(b)in accordance with the provisions of Part VIII of Schedule B (reduction related to up-rating of widow’s pension) to the 1987 Regulations; or
(c)by virtue of a pension debit,
shall be deemed not to have been so reduced.
(3) In the case of a regular police officer who has made an election under regulation G4(1) of the 1987 Regulations, sub paragraph (1) shall have effect as if for the reference to _ of any other pension calculated by reference to pensionable service reckonable by reason of that period of service there were substituted a reference to the amount of any other pension which would have been so calculated had the officer not made such an election.