This second volume on the LNER 4-4-0 locomotives describes the design, construction, history, operation and performance of the North Eastern, North British, Great North of Scotland and Gresley LNER built examples, classified by the LNER at the Grouping as classes, D17 - D24, D25 - D36, D38 - D48 and D49 respectively. It covers from their emergence in the late nineteenth century to their demise in the mid or late 1950s and early 1960s with their performance at their peak operation times, mainly in the inter-war years of LNER ownership.