THR was now well established as a leading manufacturer of locomotives in its own right .
Manufacturer 's parent company , whilst important , was certainly not paramount manufacturer 's its continued success manufacturer as it may have been almost 20 years earlier when Rolls - Royce took over .
THR was now well established as a leading manufacturer of locomotives in its own right , and its parent company , whilst important , was certainly not paramount to its continued success , as it may have been almost 20 years earlier when Rolls - Royce took over .