Something we need on tenders is a comprehensive affidavit on tenders to be signed by vendor and customer staff, which affidavit carries criminal jail sanction on the signatories and an immense fine on the companies : double the contract value.    Something along the lines of having no knowledge of any indirect or direct commercial interest in any way by any other party.    A statement of beneficial interest plus an undertaking to notify if become aware at a later point

Let's how many eskom/transnet cadres or chinese/french/american executives will risk fifteen years in jail for a deal