Rule 85
You MUST NOT carry more than one pillion passenger who MUST sit astride the machine on a proper seat. They should face forward with both feet on the footrests. You MUST NOT carry a pillion passenger unless your motorcycle is designed to do so. Provisional licence holders MUST NOT carry a pillion passenger. Laws RTA 1988 sect 23 , MV(DL)R reg 16(6) & CUR reg 102