Can the Contractor suspend performance under Option Y(UK)2?

Can the Contractor suspend performance under Option Y(UK)2?

Yes. Under section 112 of the Housing Grants, Construction and Regeneration Act 1996, the Contractor has the right to suspend performance if he is not paid the amount in the Project Manager’s certificate, by the final date for payment, unless an effective withholding notice has been issued under Clause Y2.3.