The aim pursued during the investigation and in framing the report has been to produce a comprehensive factual survey of the motive power position and of developments and trends at home and abroad in an attempt to bring out in correct perspective all the factors relevant to the formulation of motive power policy, with an appreciation of their implications for British Railways. Endeavour has been made to present conclusions and recommendations in a form that will have solid practical value, be capable of realisation, ensure adequate opportunity for the encouragement and application of technical progress, and will enable British Railways continuously to modernise their motive power and to provide, on a sound economic basis, a service in keeping with the times and of a standard required by the public."

The report concludes that large scale experiments in diesel and electric traction should be undertaken; thus heralding the beginning of post-war modernisation.