If I insure my car can anyone drive it or do they all need individual policies?

When you insure your car the only people who are allowed to drive it on your policy are yourself and any named drivers that you may have placed onto the policy. If another driver wants to drive your car and has a fully comprehensive policy themselves, they may be allowed to drive your car under their own policy but only for Third Part cover, meaning that should they be involved in an accident, the Third party will be covered but your vehicle would not.

They must check their individual motor insurance documents to see if they are covered for this.