Hi, as long as she declared that he is living with her, then yes he will have had a crb check. If he is he "assistant" then I am pretty sure he will have to be a trained childminder, ofsted would then come out, inspect their home and garden, and interview them both, they will then recieve their Registration Certificate ( which must be displayed during their working ours, along with their fire escape proccedure and their complaints proccedure, which must display ofsteds tel number). If he is not a registered childminder (even if he is crb checked), he cannot be left alone with the children. This is to protect obviously the children, but also the childminder and their families against false accusations, which has been known. Partners are allowed to be around the children (thats why they are crb checked), but they are not allowed on their own with them. My husband has been on trips with us, but not left alone with them (its not that i dont trust him, its just its the rules and its simpler if you stick to them. You can have more than one registered childminder to a setting (eg their house), you can then be a team and work together. Parents would have to be made aware of anything, when filling out the contracts. The childminded children should not be going around other peoples houses without the childminder with them, they should not be playing out in the street either.