Built by Collett in 1927 after pressure to restore the GWR's
pre-eminence in motive power and cope with increasing traffic post-war
to the Devon and Cornwall holiday resorts, the thirty Kings were the
final development of the Churchward Stars and the 1923 Castles and
remained on top-link main line duty until their final replacement by the
'Western' class 52 diesel hydraulics in 1962.
The book includes an insight into the thinking of some of Collett's
senior staff at the end of the 1930s and the eventual transformation in
the latter years with redraughting and double chimneys. As well as
describing their design and construction, the book covers
comprehensively their operation and performance backed up by many
recorded logs on all main GW/WR routes over which they were permitted.
The author had close experience of the class when working at Old Oak
Common between 1957 and 1962 and includes a chapter of his experiences
with them including many footplate trips (as a management trainee, he
was greeted with glee by many firemen who would hand him the shovel).
The book includes over 250 photographs of which 100 are in color.