26.3  Obligation to Pay

The Authority shall have no obligation to pay the Service Provider in respect of any part of the Service in relation to Apparatus unless that Apparatus is:

(a)  Existing Apparatus (including, for the avoidance of doubt, Apparatus that is Deemed to Comply); or

(b)  New Apparatus comprised within a Certificate of Compliance; or

(c)  Apparatus Accrued in accordance with Schedule 15 (Accrual and De-Accrual of Apparatus) and/or the Change Protocol.