4.7 Where it is stated in the Details that the Client and Service Provider entered into a Notice to Proceed in relation to the Services prior to the date of this Agreement, the Service Provider acknowledges that as at the date of this Agreement, the Client has made payments under the Notice to Proceed towards the Fee in respect of that portion of the Services carried out under the Notice to Proceed. The Fee payable to the Service Provider under this Agreement shall be reduced by the sums previously paid to the Service Provider pursuant to the Notice to Proceed.