sentences:  In 1923 the Midland Railway became part of the London, Midland and Scottish Railway, and W. R. Reid was appointed Carriage & Wagon Superintendent.Together with the LNWR's Wolverton works, new coaches were built to the Midland design, corridor coaches with doors to each compartment - the so-called "all-doors".These were still in use until nearly 1960, particularly on the Liverpool and Newcastle to Bristol expresses.