My company is a subcontractor providing services to a prime under a contract with Government. The prime is considerably overdue in settlement of its invoices (by a period of months not days) and has given no reason for its failure to do so. My company is concerned that the prime has failed to invoice Government and may be insolvent. Is there any means of compelling the prime to make payment to its subs (other than normal debt collection procedures)? Alternatively, is there any means of approaching Government for payment to be made direct to the subs? Any and all advice welcomed. Thank you in advance.