The Public Passenger Vehicles Act 1981 requires that a vehicle adapted to carry more than eight passengers and used as a Public Service Vehicle shall not be used on a road unless a certificate has been issued indicating that prescribed conditions of initial fitness have been fulfilled. These prescribed conditions may be found in Part II of the Public Service Vehicles (Conditions of Fitness, Equipment, Use and Certification) Regulations 1981 (S.I.1981/257) (“the 1981 Regulations”).