[1] Hawksworth was one of Churchward's "Bright Young Men", and was involved in his revolutionary designs including the general arrangement drawings for "The Great Bear".

Following Churchward's retirement in December 1921, Hawksworth was appointed Chief Draughtsman to his successor Charles Collett where he co-ordinated the work on the King Class.

In 1932 he was appointed Assistant, to the Chief Mechanical Engineer, following the departure of William Stanier to the London Midland and Scottish Railway.

However, having been at the forefront of steam locomotive development, ideas at Swindon Works had somewhat stagnated under the later years of Collett, now in his seventies and whose reluctance to give up the CME's post resulted in Hawksworth's lateness in taking up this position.

These were similar to the 5700 class under the footplate but had a much larger boiler giving them more power and adhesive weight - and thus braking capacity.

This had the same boiler as the 9400 but an all new short wheelbase chassis with outside Walschaerts valve gear and no running plate, and made considerable use of welded construction.

Between 1946 and 1950, Hawksworth was involved in an experimental effort to introduce oil-firing in place of the coal that, post-war, was being exported to earn currency.

[4] Hawksworth was involved in the ordering of the GWR diesel shunters and two experimental Gas turbine-electric locomotives Nos.

[6] Hawksworth remained Chief Mechanical Engineer through the formation of the Western Region of British Railways in 1948, continuing to work on locomotive design until retiring at the end of 1949.