Paragraph 2 Contributing service
References to contributing service shall be construed as references to service which—
(a)
would have been reckonable for the purpose of calculating a benefit under the approved pension scheme and
(b)
is not non-contributing service:
Provided that where such service would not have been reckonable at full length, it shall be reckonable as service for a period adjusted by the fraction by which it would have been adjusted under that scheme.