I have had some bad experiences when hiring childcare's over the last 12 months, some have been unreliable and others even worse. This has happened both when hiring through agency and private, my BIL suggested that I should start doing background checks on them with someone like 192.com before they start. He's a developer and does it with all his contractors, AIBU background checking?
I am not looking to find out anything overly private, just set my mind at rest that they are who they say they are and don't have any huge financial warning signs. 