Nothing in section 2 or 2A shall affect the calculation of any public service pension entitlement (including an entitlement to a lump sum and an entitlement to periodic payments of pension or other benefits) of a person who -

(a) in the case of section 2, is a pensioner or becomes a pensioner on or at any time before the relevant date or, in the case of a pensioner falling under paragraph (c) of the definition of "pensioner" in section 1, at any time after that date; and

(b) in the case of section 2A, falls within the definition of "relevant (post 29 February 2012) pensioner" in that section.