We award contracts 'blind' in that we never know who has tendered for a contract. This is fine, but we're not allowed to know who they are even after been awarded. Sometimes there appears to be just one firm that can offer their services, but we are not allowed to know who they are, or their website details, so impossible to do research of your own. This can be frustrating as you're not always sure what questions to ask, especially, as recently, it was for very technical and expensive equipment. We are given quotes, of course, before decisions are made. Is this common practice? Can a clerk refuse to give such information when requested? Are you allowed to see any invoice?