One of the duties of being a childminder or a nanny may be to drive the kids to school or simply take them out in the car for activities. If you need your childminder or nanny to drive your kids, then you must ensure that they are appropriately insured!
If your childminder is using their own car, it is appropriate to ask them if they are properly insured to drive your kids. The minder may need to check with their own motor insurance policy to see if they are automatically covered to carry minded children in their vehicle. They may have to pay extra on their premium because they are technically using the car for business purposes. Also an insurance company may insist they have Class 2 insurance( using vehicle for business purposes) to cover the service. Discuss these issues with your childminder before you ask her to drive your kids.
Annual childminding insurance such as Childminding Ireland offer motor insurance for childminders that is appropriate for their service.