4. Past service benefits
4.1 The Contractor shall (and shall procure that each relevant Sub-Contractor shall) ensure that the Contractor's Scheme provides in respect of each Transferring Member such benefits as the Administering Authority's Actuary certifies to be of actuarially equivalent value [(in accordance with the Actuary's Letter)]44 to the benefits which would have been payable under the LGPS in respect of the Transferring Member's service before the Relevant Transfer Date if he had remained a member of the LGPS.
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44 It may be necessary to refer to the Actuary's Letter to determine what 'actuarially equivalent value' means. 'Actuarially equivalent value' is the term used in the HM Treasury Guidance 'A Fair Deal for Staff Pensions : Procurement of Bulk Transfer Agreements and Related Issues'.