If you are driving a minibus on a Section 19 Permit you can a vehicle with up to 16 seats on a standard car licence as long as you meet certain conditions; You must not be driving for reward or hire, you must be over 21 and have been driving to two years and the minibus GVW must not exceed 3500kg (4250kg with specialist disabled access equipment). If you have D1 entitlement you can be paid to drive the minibus and drive a vehicle over 3500kg.