(1) This regulation applies to a person—
(a) to whom a protected benefit is being paid or may become payable, and
(b) who is placed in a worse position than he would have been in if an amendment made to the principal Regulations by regulation 3 of the 1990 Regulations or regulation 2 above (“the relevant amendment”) had not applied in relation to the protected benefit.
(2) A protected benefit is one which is being paid or may become payable by a police authority, under the principal Regulations, to or in respect of a person who, having served as a regular policeman within the meaning of those Regulations, ceased to serve as one, or died, before the material date.
(3) The material date—
(a) in relation to an amendment made by regulation 3 of the 1990 Regulations, is 1st May 1990, and
(b) in relation to the amendment made by regulation 2 above, is 1st August 1991.
(4) A person to whom this regulation applies may, by giving written notice to the police authority within 3 months after 1st August 1991, elect that the relevant amendment is not to apply in relation to the protected benefit.