"Dear Sirs, Walsall LIFT Accommodation Services - Goscote Palliative Care Centre COMPLETION CERTIFICATE "
“21.1 Payments . . . (b) If the Sub-Contractor is obliged to pay any monies to Shaylor Construction Limited pursuant to this Agreement, Shaylor Construction Ltd may require payment of the same by notice in writing or may deduct or withhold the amount in accordance with Clause 21.5. (c) . . . (d) Shaylor Construction Ltd shall be entitled to exercise any set off (whether at law or in equity) in respect of any sums due to them hereunder. . . . 21.5 Payment of Amount Certified Subject to compliance with Clause 21.5 and any withholding and/or deduction pursuant thereto, the Employer [Walsall] shall pay each Monthly Payment to the Sub-Contractor on or before the Final Date for Payment applicable thereto (together with VAT to the extent payable thereon). 21.8 (b) The Final Payment shall be due not later than 30 days after the date of issue of the Final Certificate to Shaylor Construction Ltd under the Main Contract conditions and within 7 days of the date on which the payment becomes due the Contractor shall send the Final Payment Notice notifying the Subcontractor of what the amount relates (sic) and the basis on which the account has been calculated. The final date for payment of the Final Payment shall be 52 days after the date it becomes due. Not later than 7 days before the final date for payment of the Final Payment the Contractor may give a notice to the Subcontractor which shall specify any amount proposed to be withheld or deducted from the amount notified under clause 21.9 (a) the ground or grounds for such withholding or deduction and the amount of the withholding or deduction attributable to each ground.” 21.10 (a) Not later than 3 months after practical completion of the Subcontract works the Subcontractor shall send to the Contractor all the documents necessary for calculating the Final Subcontract Sum. (b) Not later than 9 months after receipt by the Contractor of the documents referred to in Clause 21.10 (a) and before the issue of the Final Certificate under the Main Contract the Contractor shall prepare and send to the Subcontractor a statement of the calculation of the Final Subcontract Sum.”