Class A1 Steam Locomotive (Tornado: 60163) Tornado - A1 Pacific Locomotive. Designer: A H Peppercorn. Completed in 2008 using a blend of traditional and modern engineering skills, Tornado is the first mainline steam locomotive to be built in this country since 1960. The A1 Pacifics were the last LNER express passenger design, able to run 118,000 miles between repairs. None were preserved at the end of steam.