I have a disabled son and as a result I am regularly asked to transport Ds1 to school trips etc, as its easier for the school. This week I have been on 2 trips and was asked to transport 2 other children who have medical conditions. I said that I would do it, but only with the parents premission. The parents were fine with it, and thanked me. But I am sure what i did was wrong and I should have a CRB check if transporting other children apart from my own. Should I ask the school to pay for a CRB check if they want me to do this regularly?