9.—(1) If a scheme member who—
(a)is in receipt of a pension under these regulations and
(b)has not attained, in the case of a woman, the age of 65 years or, in the case of a man, the age of 70 years,
performs after retirement service which is pensionable service, the Board shall have power to suspend or reduce that pension as they think fit.
(2) Where the pension of a scheme member who has retired after performing less than 37 years' pensionable service is suspended or reduced under paragraph (1) above, then, on his second retirement, he shall be paid a pension at such rate as the Board think fit having regard to the additional period of pensionable service performed, not being a rate lower than that received by him before the pension was suspended or reduced.
(3) The rate of pension payable to any scheme member under these regulations shall not be increased by reason of the performance by him of pensionable service after retirement unless his pension has been suspended or reduced under this regulation.