CEASING TO BE ELIGIBLE
15. Unless the Railways Pensions (Protection and Designation) Order 1994(1) applies, a Member shall cease to be eligible if his contract of service is varied so that he is no longer eligible for membership. The Member shall be treated as if he had left Service on the day he ceased to be eligible except that a Member with deferred benefits cannot choose an early pension under Rule 11A (Early Benefits) before actually leaving Service.
If a Member who has ceased to be eligible later satisfies the conditions for joining the Section (see Rule 2 (Joining the Section)), the Member may rejoin the Section as described in Rule 2, in which case the Member’s benefits shall be calculated in accordance with Rule 12 (Early Leavers Rejoining). Any period between ceasing to be eligible and rejoining the Section shall not count as Pensionable Service.
S.I. 1994/1432.