First Generation DMUs in Scotland covers virtually the whole of Scotland and encompasses locations from Arbroath in the north to just south of the border to Carlisle. This book covers diesel multiple units from Metro Cammell 101s up to and including Swindon Inter City class 126s. From the mid-1950s Diesel Multiple units began to appear in Scotland, firstly on the main line between Edinburgh and Glasgow Queen Street and then later on many secondary lines. More DMU units began to appear from the early 1960s with the gradual withdrawal of steam trains. Possibly the ultimate in the DMU development were the Inter City DMUs, later classified as 126. They were introduced from May 1956 on the Edinburgh to Glasgow Queen Street route and later in 1959 between Glasgow Central and Ayr. However with the expanding motorway network, many branch lines could not be saved as the Beeching axe befell many of them.