 Stephenson used the Gothic arch firebox for their long-boiler locomotives as well, including their 2-2-2 "North Star" of 1841 and outside-cylindered 2-2-2s for the Yarmouth and Norwich Railway in 1844.The "Gothic arch" firebox was also notably used by a number of Gooch's Great Western Railway broad-gauge locomotives, including the "Firefly", "Leo" and "Hercules" classes of 1840-1842.The last class to use them was the "Premier" class of 1846–7, which were also the first locomotives to be constructed at the new Swindon Works.