Although in the late 1970s they were frowned upon by many for replacing a number of loco-hauled services, and indeed locomotives, for 40 years the High-Speed Train (HST) was the mainstay of express services for many train operators in the UK. It was in the former Western Region of British Rail that they first made their mark in service, and they were on duty there from their earliest days until 2019 when, after years of sterling work, they were withdrawn from frontline express duties. Illustrated with over 190 color photographs, this book looks at the history of many of the power cars that worked in the region and details the varied Western Region locations, some off the beaten track, where they could be seen operating during their four decades of service.