IMHO I wouldnt give any references to anyone until there is an offer letter/contract and it has been signed. If you're going direct then, no problem, give em by all means, but if you've going through an Employment Business, then, be careful. If asked by the agent, say that you will give the references directly to the end client.There are a lot of dodgy recruitment consultants out there who just phish for your references and call them up, offering their services.