Actual Development Costs. In the event actual Development Costs paid by GW Pharma to Third Parties in a calendar quarter exceed the estimated Development Costs paid by Otsuka to GW Pharma for such quarter (including any surplus Development Cost payment previously made by Otsuka to GW Pharma and carried over from a previous quarter) as documented in a progress report (including invoices) supporting the excess of actual over estimated Development Costs for such calendar quarter, Otsuka shall, within thirty (30) days of its receipt of an invoice for the excess difference from GW Pharma, pay GW Pharma an amount equal to the excess difference of actual over estimated Development Costs. In the event actual Development Costs paid by GW Pharma to Third Parties in a calendar quarter fall below the estimated Development Costs paid by Otsuka to GW Pharma for such quarter (including any surplus Development Cost payment previously made by Otsuka to GW Pharma and carried over from a previous quarter) as documented in a progress report (including invoices) supporting such overpayment by Otsuka of Development Costs for such calendar quarter, GW Pharma shall reduce the next estimated Development Cost payment invoiced to Otsuka hereunder by the entire amount of Otsuka’s overpayment. If Otsuka’s overpayment exceeds the next estimated Development Cost payment, GW Pharma shall subtract the full amount of any such remaining overpayment from successive invoices to Otsuka for Development Costs. If, at the completion of the Development Plan, any overpayment by Otsuka of estimated over actual Development Costs remains, GW Pharma shall promptly return such overpayment to Otsuka.
Actual Development Costs. Where HNZ Build disagrees with the Developer’s assessment of the actual development costs to be included for the purposes of clause 33.5(b) or where the Developer fails to submit an assessment of such costs within [40] Working Days after the date of the Call Option Notice, either party may refer the assessment to an Expert for determination under clause 34 and the relevant Expert appointed must be an external chartered accountant from a level one accounting firm approved in accordance with All- of-Government Consultancy Services – Business and Finance (Tranche 1).