Class 31 - 31271 Railfreight Construction31271 Railfreight Construction One of just five Class 31s to gain Railfreight livery with Construction sub sector decals, 31271 also has the distinction of being the only surviving example to retain the iconic Roundel designed scheme into the present day. Built as D5801 and new to 30A in June 1961, it completed its heavy general overhaul at Doncaster in April 1987 emerging in the soon to be obsolete Railfreight Red Stripe and was notably the last