The Fire Services (Pensionable Employment) Regulations 1958

2.  If such a person as is referred to in Regulation 1 of these Regulations, within three months after the date on which he enters on pensionable employment—

(a) notifies the local authority maintaining the superannuation fund to which he is then a contributor that he desires these Regulations to apply to him;

(b) pays to that authority an amount equal to the amount of any gratuity or award by way of return of contributions made to him on ceasing to be a regular fireman; and

(c) agrees to pay a sum equal to the amount of the balance of any sum he had undertaken to pay by regular instalments in accordance with the provisions of the Firemen's Pension Scheme which was outstanding immediately before he ceased to be a regular fireman, as though the said sum were payable in accordance with the regulations for the time being in force under subsection (3) of section two of the Local Government Superannuation Act, 1953, or, where he is subject to a local Act scheme, in accordance with the provisions thereof,

then he shall be entitled to reckon a period equal to the period of pensionable service he was entitled to reckon immediately before he ceased to be a regular fireman increased by one-third—

(i) for the purposes of the Local Government Superannuation Acts, 1937 to 1953, and any regulations made thereunder, as if it had been a period of contributing service, or

(ii) for the purposes of a local Act scheme, as if it had been a period of service or contribution, within the meaning of that scheme, as the case may be;

and his aggregate contributions, within the meaning of the Firemen's Pension Scheme, in respect of the said period of pensionable service shall be deemed to have been contributions in respect of contributing service for the purposes of the Local Government Superannuation Acts, 1937 to 1953, and any regulations made thereunder, or, as the case may be, in respect of service for the purposes of a local Act scheme, made upon his entry on pensionable employment to the superannuation fund to which he is a contributor.