I can see your argument, but would say 'No' as this is covered by the express provisions of the contract in the following way :
- acceleration under clause 36.1 means bringing forward the contractual Completion Date and as a result of that, the PM also states changes to Key Dates. Therefore, bringing forward a Key Date only is not acceleration as defined in the contract.
- under clause 14.3, the PM can give an instruction which changes a Key Date, which could include bringing it forward.
- under clause 60.1 (4), changing a Key Date is a compensation event, which means that additional costs, including increased risk allowances under 63.6 can be included in the quotation, but it is assessed by the rigour of the compensation event process.