The Superannuation (Local Government and Public Transport Services) Interchange Rules 1965
These Rules provide for the aggregation of service and for a single superannuation award in cases where persons transfer within the prescribed period (generally 12 months) from pensionable employment with a local authority in England or Wales to employment entailing membership of certain superannuation schemes associated with the public transport services, or where within a similar period persons transfer from the latter to the former employment. Where such a transfer is made the person is enabled, subject to the payment of an appropriate transfer value, to reckon previous service for pension under the superannuation scheme to which he transfers.