44. Modes of sub-contracting.

In this context, 'sub-contracting' means entrusting the performance of the whole or a part of the carriage to a person other than the contractor's own employees; thus it would not include the use of a vehicle hired without its driver, but would include the employment of a vehicle hired with its driver in circumstances in which the driver remained the employee of the owner of the vehicle although working under the direction of the contractor and his staff