"Contractors" who supply the coach and driver in this journey and the "contractors" to provide a vehicle to make those activities. "employment" along the journey.
"Contractor" is a leading supplier of coach and driver on this trip and "hired" to arrange for a car to carry out routine activities. "Employer" throughout this trip.
"Contractor" Supply Coach and drivers in this journey and "contractors" has provided the activities of the car to the "Employer" throughout the journey!