Rights of insured persons
21. Where the officer, before he ceased to be employed as a civil servant, was an insured person within the meaning of the National Insurance Act 1965, then—
(a)
(b)if he had not been so excepted, the provisions of the said regulations shall apply to him as if any service which he reckoned as contributing service or as service or a period of contribution for the purposes of a local Act scheme or as non-contributing service under rule 17 of these rules, being service of which account would have been taken under the modification provision for the purpose of reducing any benefit to which he might have become entitled under the Superannuation Act had he continued to be subject thereto, were service rendered on or after 5th July 1948.